Free Udemy Courses Everyday

Description How would you like to start your very own profitable Social Media Marketing Agency from scratch even if you have no prior marketing experience? Over my 3+ years of running a successful marketing agency I’ve learned a lot about what it takes to work with clients and get paid $1,000’s every month to provide clients marketing services. In this course I walk you through step-by-step exactly how to start and build a profitable marketing agency that will allow you to work from anywhere in the world!   Udemy Coupon Code :   https://www.udemy.com/how-to-start-a-profitable-social-media-marketing-agency/?couponCode=AGENCYFREE

Course Description If a picture is worth a thousand words, a stunning product picture is worth a thousand website visits and most likely a lot of conversions. The purpose of this course is to teach you how to create product photography that turn your customers into loyal followers and that will increase your sales and profits without being a professional photographer. We will walk you through the entire process of producing photograp that help you grow your online business. Over the last few years we have helped over 10000 students from around the world and received overwhelming feedback about their personal results. This course is not just about how to take good photos but about all the technical and strategical planning behind a successful online business. Why start learning Product Photography for Enterpreneurs? After completing this course you will be able to: Improve your online business presence with beautiful product photos Save thousands of dollars in photoshoots Inc

Course Description Welcome to “Learn and Understand Regular Expression(REGEX) – with Examples ” course This is a course of regular expressions(REGEX). When I start leaning regular expression I found it really difficult to understand. I think regular expression is a pain for beginners. I’m apologies that and designed a course to help you out. If you are not understanding regular expressions(scratching your head) then just enroll this course and see how easy it is. You are going to be learn: Introduction Introduction to regular expressions Metacharacters Literal characters, flag modifiers, dot metacharacter, anchors, escaping metacharacters and word boundaries Character Classes Character classes, negate character classes, shorthands character classes Repetitions Plus (+) quantifiers, asterisk (*) quantifiers, controlling repetitions, greediness and laziness Grouping and Backreferencing Grouping, capturing and backreferencing, non capturing group, alternation and nested alter

Course Description Do you want to learn how to create vector illustrations  quickly & easily and create assets for video games or animation? You can do it in this course and learn the basics of  Adobe Illustrator CC  by creating some simple flat character designs! This class is perfect for illustrators, graphic designers, game artists, mobile game developers and anyone else who would like to learn how to create vector graphics. Through this assignment you will learn: How to create three different base characters How to create three different body types How to create different color schemes for your characters Content & Overview This is a great way for beginners to introduce themselves to Adobe Illustrator. Starting with a basic overview of the program, the course will help familiarise you with the tools you will need. Each step will be broken down to make understanding the process even easier, starting with creating a simple vector shape to creating your different char

Course Description Did you know that it’s possible to live in your own home and have others pay for it for you? Sounds almost too good to be true right?  The good news, it that is something that thousands of people are doing it right now… It’s call “House Hacking” – This is where you purchase a multifamily property and rent out the other units that you’re not using. Do you need to be “rich”?  Nope! Maybe this sounds interesting, but have absolutley no idea where to start? If so, that’s exactly why I’ve created this course. To help people just like you get started in real estate and help you understand the important in’s and out’s. I’ll be showing you what has worked for others on how they’ve been able to live at their own home for little to no cost! I invite you to watch the preview lessons of this course for even more information. Then, enroll  in this course today to open your eyes to the world of house hacking! __ Please note: In this course, I mention that you have 100

Course Description A wide range of hotel management professionals in operations does not feel comfortable reading and presenting their department’s financial performance due to lack of financial background & knowledge and training. Learn with us to understand, how to anlayse Hotel financial statements and with key terms used in operations. After completing this course i am confident that you will be able to anlayse & present your department’s performance easily and professionally. You will be able to understand how your decisions affect profitability of hotel and improve hotels profitability. Give your Career a head start by learning one of they key responsibilities of your career as department manager which is managing the departmental P&L In this unique and first in league online course, we will – Discuss and understand key unique terms used in hotel management. – Understand definitions of revenue and expense heads. – Drill down all revenue and expenses to th

Course Description ALREADY MORE THAN 7 MILLION PEOPLE FOLLOW DAVID MICHIGAN ON SOCIAL MEDIA David Michigan has been quoted or interviewed in Muscle & Fitness, FOX News, Forbes, Harvard, TED, Men’s Fitness, IBTimes, NASA, Huffington Post, CNBC, USA Today, Yahoo News, Florida Times, Buzzfeed … Dear readers, The tips and secrets that I will share with you will cover many areas of Magic and Mentalism. All you want to know … every question you want to be answered … every nuance you want me to explain to you will be covered. The tips I am going to share can be used as a resource “well”, where you will be able to take in whatever answer you desire to clean up any confusions where problems you have. This comprehensive course will help you to: -You’ll Learn Magic Effects -You will be Admired in society -You’ll Learn Mentalism Effects -You’ll Know Well Long Kept Secrets -You’ll Have the Keys to Wow Girls and Boys -You’ll Have a Better Esteem for Yourself -You’ll Get New Powers

Course Description True, I could start out by telling you all about my career today … That I’m earning an average of between $4,000 and $8,000 every month without having to perform every single night… (and that’s while being a busy mom, very active and important in my two young children’s lives) That over the last 15 years, I’ve performed all over the world, participated in international music competitions, won many prizes, including first place, and taken part in dozens of different projects as a singer… But no. I actually want to start out with the fact that before I had all this stability, I had only one thing, or perhaps actually two: unpolished talent—and desire! These two things managed to help me accomplish for myself what I want to teach you to accomplish. I didn’t have a mentor showing me the way, taking me by the hand and shortening the process, saving me from all the failures and mistakes, or lifting me back up onto my feet when I lost hope and motivation. And t

Course Description Do you want to be an actor?  Are you an experienced contemporary actor looking for some help with classical texts?  Or, have you stepped on stage so many times that you’re feeling lost for inspiration and need a fresh perspective to bring your performance to life? If so, this course is for you.  In this course, experienced performer and teacher Linda Taimre takes you through how to use your body and your voice to express yourself on stage.  While the focus is on Shakespearean text, the methods and techniques that Linda teaches are foundational to all types of acting. After this course, you will feel confident to tackle any Shakespearean monologue or scene.  You will know how to bring your performance to life and have it filled with emotion, truth, and your own vibrant presence. Start today and take your acting to the next level. Udemy Coupon Code :   https://www.udemy.com/learning-to-act-through-shakespeare/?couponCode=FIRSTACT   Share with your friends :

Course Description [Course is up-to-date with January, 2018 information! ] +++JOIN OVER 6800+ SUCCESSFUL STUDENTS!+++ ARE YOU READY TO TURN YOUR LIFE UPSIDE-DOWN AND TURN YOUR BUSINESS INTO A 6-FIGURE MAKING CASH MACHINE IN 2018? If so, what if I told you… You don’t have to spend thousands of dollars to be a niche research expert, because I am going to reveal to you my exact strategies I teach to my private $20k+ coaching clients. Our private clients earned more than $1,000,000 in 2017 just by simply using the limitless power of the biggest social network ever. And now you have the chance to join them, simply by copying our business model! Selecting your niche is a critical step in your business, and if you fail here, there is no way back from the downhill – no matter how much money you pump into your business from your hard-earned cash, it simply won’t bring the profit you truly want. But NOW… I am going to show you how to develop “Ninja Niche Research Skills” that can give

Course Description *** Course access includes quizzes & homework exercises, 1-on-1 instructor support and LIFETIME access! *** Hear why this is one of the TOP-NOTCH Fibonacci Trading Retracement course on Udemy: TOP-NOTCH  Fibonacci Trading  Instructor I currently have 67 Courses with 20,000+ Minutes of Content ( 324   hours in total) with 70,000+ Satisfied Students enrolled. That’s 13+ days  of learning material! Fibonacci Trading Retracement Course Details: Are you willing to learn a new skill? Do you know the difference between a novice or Professional Trader? Do you want to be a Professional Trader? If the Answer is yes then this is the course for you. Fibonacci Trading Retracement is the Most Talked about Tool in Trading amongst most popular technical Day Trading or Long Term Trading Tool in the world. Fibonacci Trading Retracement are a form of technical analysis based on the ideas that the market is cyclical in nature. The tool is comprised of 9 diagonal l

Course Description ANYONE can Build Long Term Wealth, while enjoying Short Term Passive Income. What if I told you there’s one sure fire way Investors have been doing just that for the past Century? Dividend Investing. Dividend Investing is a sure fire way to generate Passive Income every single month. It’s also one of the most proven methods to build long term wealth. Stop working for money. It’s time to PUT YOUR MONEY TO WORK…for You! Learn how to invest your money into Reputable Companies so that money compounds up to 12% returns (or more) over time. Also, learn how to spot reliable Dividend Paying Companies that will pay you Passive Income every single month just for investing in them. Enroll today. Start generating Passive Income tomorrow .   Udemy Coupon Code :   https://www.udemy.com/how-to-generate-passive-income-with-dividend-investing/?couponCode=CONSTANTCASH   Share with your friends :

Course Description Want to take your instagram and photography skills to the next level? Don’t have a lot of money to spend on a fancy DSLR camera? But you do have an iPhone! Then our complete iPhone Photography Course is for you! Today, most people are using their smartphones (especially their iPhones) to capture every moment of their lives. We truly live in a digital world where photography skills are in high demand. In this course (which is designed for beginners) I will share with you step-by-step how to take better pictures just using your iPhone! Welcome To: iPhone Photography – Take Better Pictures With Your iPhone ⇉ Join 450,000+  Students Who Have Enrolled in My Udemy Courses! ⇉ 10,000+ Five Star Reviews Show Students Who Enrolling Are Getting Real Results! ⇉ You Get Over + Lectures and + hours of HD content! ⇉ Watch the Promo Video to see how you can Get Started Today!  Don’t Delay! Click the “Buy Now”   Button   For Instant Life-Time Access! ___________________

Course Description Taking care of kids can be scary, because they are very accident prone.  This is true for children of all ages, from newborn infants to older kids who are almost fully grown. Anybody who has the responsibility of taking care of kids, whether you be a parent, teacher, babysitter, older sibling, or even a neighbor who is asked every so often to look after the kids, should know the very basics of how to act in an emergency situation. This course is not designed to make you a professional medical provider, and it will not teach you how to diagnose your child’s illness. This course is basic and necessary, and will cover the most common situations that can and will arise, as well as less common but dangerous situations that require immediate response. After taking this course you will feel more comfortable and confident, that if something should happen to a child and you are in the area, you will be able to properly assess what needs to be done and take the right steps

Course Description *** Course access includes quizzes & homework exercises, 1-on-1 instructor support and LIFETIME access! *** Hear why this is one of the TOP-NOTCH Gann Fan Forex & Stock Trading Technical Analysis course on Udemy: I learned a new skill. Gann Fan works that’s for sure. -Alexandrria Damiani 1st! Another knowledge bomb dropped once again in this course. I keep coming back to this teacher because he never fails to teach real things that help me make money. -Matthew Schneider The Best Course Ever -Olenchenko Nik TOP-NOTCH Instructor I currently have 67 Courses with 20,000+ Minutes of Content ( 325 hours in total ) with 70,000 + Satisfied Students enrolled. That’s 11+ days  of learning material! Gann Fan Forex & Stock Trading Technical Analysis Course Details: Are you willing to learn a new skill? Do you know the difference between a novice or Professional Trader? Do you want to be a Professional Trader? If the Answer is yes then this is the co

Course Description This is a course about the importance of a good night’s sleep for your health, happiness and productivity. We live in a world that operates 24 hours a day, 7 days a week and we are so productivity driven, that it sometimes comes at the cost of our health. In addition, we are constantly connected to the world through technology like smart phones, computers, and other wearables. Both of these amazing features of today’s world can have negative and potentially dangerous impact on our sleep, both quantity and quality. People don’t realize just how important sleep is to our health. A good healthy diet, frequent exercise as well as proper sleep cycles are three pillars of our health though for some reason health oriented people often focus only on the first two, in an attempt to be more productive and utilize more hours of the day. In fact, poor sleep can make us much LESS productive in our waking hours, in addition to the other health risks that come about. This course

Course Description Pregnancy can be a tough and sensitive time, and it is too easy to forget the beauty of the miracle that is transpiring inside of you. This course has a number of sections to help you throughout the entire pregnancy, and properly prepare you for birth. Pregnancy deserves a multi-factorial approach to make sure that you and your baby are healthy physically, mentally and spiritually. As the baby grows inside of you, there is an incredible opportunity to connect, and provide them with an environment which allows them to grow and thrive in this critical time. Give your baby what they deserve and need, and do this by taking care of yourself physically, emotionally, mentally and spiritually. This course was put together by an extensive team including medical professionals, yoga/pilates instructors, physiotherapists, as well as doulas. This team got together to create a course which brings you the essentials of pregnancy from every direction that you need. What’s in thi

Course Description *** Course access includes quizzes & homework exercises, 1-on-1 instructor support and LIFETIME access! *** Hear why this is one of the TOP-NOTCH Pivot Point Trading course on Udemy: What a Great Course this is. I learned a new Skill, Now Today I know what will be the trading range and where should I buy or sell. Thats something very rare in other courses. -Mariann Sudbeck I knew about Pivot point but I don’t know why I never focused on it. This course did a good job explaining it in detail. -Sophie Arico TOP-NOTCH Instructor I currently have 66 Courses with 20,000+ Minutes of Content ( 323 hours in total ) with 70,000 + Satisfied Students enrolled. That’s 11+ days  of learning material! Pivot Point Day Trading Course Details: Pivot Point Trading is the Most Talked about Tool in Trading amongst most popular technical Day Trading Tools in the world. Day traders Consider Pivot Point as the most important levels in day trading. As it represents easy

Course Description *** Course access includes quizzes & homework exercises, 1-on-1 instructor support and LIFETIME access! *** What a Great Course it is. I never Expected this kind of Professional information. Simply Awesome -Luis Menchaca I love this course as it taught me fundamental analysis and how to pick stocks based on Technical Analysis along with fundamental analysis. As Now I know how much dividend % my stock is giving now and with technical analysis I can increase my capital gain -Jennifer Castillo Hear why this is one of the TOP-NOTCH Stock Screening Course on Udemy: TOP-NOTCH Swing Trading Instructor I currently have 65 Courses with 17820+ Minutes of Content ( 297 hours in total ) with 65,000+ Satisfied Students enrolled. That’s 12+ days  of learning material! Stock Screening Course Details: Do you know how to pick Stocks? Do you know how to know if your stock have a high EPS? Do you know if your owned stock is Industry leader in terms of ratios or not?

Course Description Do you Want to Understand why is Bitcoin Rising? Who is buying it? Why People Own it? Then you have come to the Right Place. I will guide you how to buy; what is its future. You will learn in depth Analysis about What is Bitcoin Wallets, Block Chain or even Bitcoin Mining. You can always apply for 100% money-back guarantee within 30 days.  This course is designed for Everyone who wants to own or understand the best cryptocurrency, Bitcoin. Bitcoin is the future and you should understand it before it disrupts the currency in your pocket. I am a Trader First and Crypto Investor 2nd; therefore you will learn what happens next. I will Explain it as an Investment today or in the future. You will also get a lifetime access to this course, without any limits! I will update it every now and then absolutely free. You get a 30-DAY FULL-MONEY BACK GUARANTEE. Udemy Coupon Code :  https://www.udemy.com/bitcoin1/?couponCode=FR1ASTH or Other Coupon Code :  https

Course Description This course follows the natural process of learning a language, just like how we learnt our mother language, which is completely different from the traditional way of language teaching. We will play a dialogue spoken by two to three native speakers. Listen as much as possible, like a little baby, emerse your brain into the conversation, pay attention to the gestures and any other kind of visual content matches the sound you hear and try to guess the meaning. play the conversation as often as possible, until you are able to understand the content and even able to predict what the next word sounds like. The video dialogue will be followed by an explanation lecture, with pin yin, and every detail from the video dialogue. You can listen, repeat, and try to imitate the pronounciation of a word using shadowing technique ( repeat right after you hear a word or a sentence) you can record yourself and compare yourself with native speaker. In the end, there will be voca

Course Description This course follows the natural process of learning a language, just like how we learnt our mother language, which is completely different from the traditional way of language learning. We will play a dialogue spoken by two to three native speakers. Listen as much as possible, like a little baby, emerse your brain into the conversation, pay attention to the gestures and any other kind of visual content matches the sound you hear and try to guess the meaning. play the conversation as often as possible, until you are able to understand the content and even able to predict what the next word sounds like. The video dialogue will be followed by an explanation lecture, with pin yin, and every detail from the video dialogue. You can listen, repeat, and try to imitate the pronounciation of a word using shadowing technique ( repeat right after you hear a word or a sentence) you can record yourself and compare yourself with native speaker. In the end, there will be voca

Course Description An extensive Pranayama course to get a profound understanding of breathing and meditation. In this course you will learn how to use your breath like a wonderful tool to start controlling all systems in your body, take care of your mind and how to take the awareness to the Soul level and realize your true nature.     (I believe these techniques should be available for everybody, money or no money. If you have no money to do the course you can PM me and we will find a solution)      In this wonderful Pranayama, breathwork and meditation course you will learn how to use the power of the breath to: Clear you mind and sharpen your awareness Increase energy, health and mental balance Energize or calm your body and mind Become aware of the deeper layers of the self Techniques learned in this Pranayama course: Bandhas Meditation Kumbhakas Yogic Breathing Ujjayi Pranayama Bhastrika Pranayama Kapalbhati Pranayama Kaki mudra Pranayama Nadi Shodhana/ Anulom V

Description The most extensive breathing course available on Udemy. Get a profound understanding of breath work and meditation and learn how to use your breath like a wonderful tool to start controlling all systems in your body. Take care of your mind and how to take the awareness to the Soul level and realize your true nature.     (I believe these techniques should be available for everybody, money or no money. If you have no money to do the course you can PM me and we will find a solution)                                                ” Proper breathing is the foundation of healthy living ”                 The course is guided by founder of the Life Awareness Project, Michaël Bijker In this wonderful Yogic breathing (Pranayama),  breathwork and meditation course you will learn how to use the power of the breath to: Clear you mind and sharpen your awareness Increase energy, health and mental balance Energize or calm your body and mind Become aware of the deeper layers of

Course Description Learn about everything there is to know about Dart Applications  and  How To Program Them . A step by step process is used to show explain every facet of these topics. NOTE: This course includes information on iOS and Android! Gain a good understanding of the following concepts with this course: What Dart is? Dart Certifications How to program in the Dart language Features of the Dart programming language Coding semantics Mobile programming Design practises of applications Application programming Network programming Dart is one of the most popular programming languages for Android in the world that is requested by all companies such as Google, Facebook and Microsoft for mobile development. This course will ensure you are not left out as more and more companies request this awesome language. This course will teach you everything about programming Dart applications. You will receive all the knowledge to use and leverage the powerful technology behind t

Course Description Man if you are in a relationship you know how difficult it is to understand women. Throughout the history men are trying to understand what women want. It hurts when you don’t get the recognition, appreciation and respect you deserve from the woman. Do you know why this happens even after you give your complete self to her? This is a lively and accessible course to successful communication between the sexes that has already helped thousands of people understand why members of the opposite sex behave the way they do, this new course contains: • what makes members of the opposite sex tick • how to understand their verbal and non-verbal language • how to motivate the opposite sex and get what you want • how to avoid arguments and promote fruitful communication • how to score points with the opposite sex and impress your partner • the real emotional needs of the opposite sex and the behaviours associated with these needs • how to keep love alive and stay togeth

Course Description Natural language processing (NLP) is one of the most important technologies of the information age. Understanding complex language utterances is also a crucial part of artificial intelligence. This course covers a wide range of concepts in Natural Language Processing from basic to advanced: sentiment analysis, summarization, word representation, to name a few. Upon completing, you will be able to recognize NLP  in your day-to-day work, propose approaches, and judge what techniques are likely to work well. Udemy Coupon Code :   https://www.udemy.com/a-complete-guide-to-natural-language-processing/?couponCode=SPOTFLOCKNLP101   Share with your friends :

Course Description Fixed Income (Bond) valuation and analysis is a strategy or process which is often used by the government or companies to determine the correct market value of the instrument.through this course we are going to be learning about curve trading, managing interest rate risk and bond portfolio management. The training will include the getting to Grips With Repos and Reverses ,Term Structure of Interest Rates,Yield Curves,The Use of Benchmarks in Bond Pricing,Managing Interest Rate Risk,Curve Trading,Bond Portfolio Management,Investment Skills,Interest Rate Derivatives. Udemy Coupon Code :   https://www.udemy.com/bond-trading-and-portfolio-management/?couponCode=IIBFREE   Share with your friends :

Course Description Excel simulations help in investigating a real-life phenomenon, process, problem using a model. This approach is automated one, result oriented, interactive and also user friendly. This method of working around with your data makes it challenging, creative and fun. These simulations actually bring out together loads of excel skills. These online tutorials are indeed self-paced and one can easily make way and learn business intelligence and understand the importance of data trending and create valuable data visualizations. We are going to learn the entire simulations procedure wherein we will understand various functions such as Data Simulation, single reference simulation, grid reference simulation, chart simulation, goal seek etc. Udemy Coupon Code :   https://www.udemy.com/microsoft-excel-simulations/?couponCode=IIBFREE   Share with your friends :

Course Description This course is a comprehensive bundle of MS Excel, Valuation, Accounting, Financial Analysis and Financial Modeling. Any one interested in a career in Finance and Financial Analyst Industry. This course is a must. Many students and professionals assume that their chances of making an Analyst career in Finance Industry are bleak if they are not from the top tier colleges. However, we have seen industry trends where skilled students and professionals from lesser known universities and companies making into big financial firms and organizations. Universities are very limited in their curriculum as they are mostly restricted to focus on theoretical aspects than actual practical know-how. Financial Analyst Training involves analyzing companies’ financials in detailed manner. Analysis is conducted through a composite of financial records, news and interviews with company insiders. It is also known as securities research or Fundamental Analysis. It consist of the sell si

Course Description This course would help you to learn the technical properties in a video, like Video Frame Size, Frame Per Second(FPS), Scanline, Pixel Aspect Ratio, different kinds of Audio Channels. Adobe Premiere Pro is a timeline-based video editing Software application. It is part of the Adobe Creative Cloud This course would help you to learn the technical properties in a video, like Video Frame Size, Frame Per Second(FPS), Scanline, Pixel Aspect Ratio, different kinds of Audio Channels. This course would teach you to start with Adobe Premiere Pro, by creating a new project, sequence, with different settings required for different platforms. Customizing and saving your own sequence settings for future need. It also gives an in-depth knowledge on the GUI / Interface of the software, along with customizing and saving your own Workspace according to your preference. This course would also teach you, importing clips , videos, media, into your project and timeline. This cour

Course Description Selling your business is a time of excitement, anticipation, sometimes anxiety and often fear!  It’s a roller coaster, to say the least, and a lot of entrepreneurs haven’t done this before. This course is put together by Chris Hall, 5x CEO and professional Business Coach.  Chris has personal experience of selling 2x of his previous businesses and interacts with audiences and executives worldwide through his work.  As a result, Chris has spotted the common patterns that owners go through when deciding to sell their business.  Regardless industry, country or experience, most owners will go through a very similar journey.  The intention of this course is to break up the process into three sections that empower you, the owner / Director, to get the best outcome. Section 1 : Preparation Section 2: The Sales Process Section 3: Transitioning Chris Hall is a TedX speaker and has more than 21,000 students on Udemy alone.  Check out the curriculum and we hope to see yo

Course Description Welcome to this course Learn Deferred Taxes through Case Studies As the name says, this course will cover only problems / case studies in Deferred Taxes. It means, there will be no separate lectures for Theoretical Concepts. You are expected to know theoretical concepts before taking up this course. Deferred tax problems / case studies are night mares for several students taking up professional courses like CA / CMA / CS / ACCA / CIMA. This course was created to help those students who are facing difficulty in cracking Deferred Tax Assets / Liabilities computations. So far, around 10 Case studies have been added into the course curriculum. All the case studies are tested in Professional Level Examinations. More case studies will be added in the coming days. This course is structured in self paced learning style. Excel / PPTs used for solving problems / case studies will be available for download. Solve problems simultaneously to get better grip on the case stu

Course Description This course aims to build strong fundamentals in the Python Programming Language. Python is a powerful,widely used programming language and is easy for beginners to learn quickly.Various development projects can be done and various products can be built by using Python. Python is one of those rare languages which can claim to be both simple and powerful. You will find yourself pleasantly surprised to see how easy it is to concentrate on the solution to the problem rather than the syntax and structure of the language you are programming in. Python is an easy to learn, powerful programming language. It has efficient high-level data structures and a simple but effective approach to object-oriented programming. Python’s elegant syntax and dynamic typing, together with its interpreted nature, make it an ideal language for scripting and rapid application development in many areas on most platforms. This course covers all the basics of Python. The concepts of variables,