Internet Programming Self Improvement

The Best Free Places to Learn R Programming Today

Dann Albright 03-12-2015

People are always curious about which programming languages they should learn How To Pick A Programming Language To Learn Today & Get A Great Job In 2 Years It can take years of dedicated work to become a truly good programmer; so is there a way to choose the right language to start from today, in order to get hired tomorrow? Read More  — which are the most valuable? Which will get them a job? Which are easiest and hardest?


One language that’s been showing up a lot more on the “which programming languages to learn” list is R, a language focused on statistical computing (in fact, it’s #6 on IEEE Spectrum’s 2015 list of top programming languages).

Why is R getting more popular, what can it do, and where can you learn how to use it?

What is R? Who Uses It?

R is an extension of the programing language called S. Unlike S, R has gained a huge amount of popularity, largely because it’s a free alternative to very powerful software used for statistical computing like SAS, SPSS, and Matlab, all of which are high-priced. While R can be used for a variety of things, it’s best used for data analysis.


One of the reasons that it’s so powerful is that people can create and distribute “packages” that add to the base functionality of the language. A quick look at some of the most recent packages to be posted include one for directional statistics, another for multilevel joint modeling imputation, and — in a break from most uses of the language – for building “attractive résumé” using a database, LaTeX, and R.


Some of the world’s biggest companies use R.

According to Revolution Analytics, Google uses it to calculate return on investment (ROI) of advertising campaigns and predict economic activity. Microsoft uses it for matchmaking on the Xbox network. The National Weather Service generates graphics with it. oDesk uses the language to analyze results from experiments. Twitter includes R as part of its Data Science toolbox.

The possibilities for R are almost limitless — and as big data becomes a more important field, the ability to efficiently analyze it is going to increase in importance as well. R is great for data analysis, and its open-source, collaborative nature makes it one of the best tools out there. If you’re interested in becoming a data scientist How to Become a Data Scientist Data science has gone from a newly coined term in 2007 to being one of the most sought-after disciplines today. But what does a data scientist do? And how can you break into the field? Read More , you’d do well to learn it.

Learning R

Of course, because R’s interface is much more bare-bones than apps like SAS, SPSS, and Matlab, you’re going to need to put in a lot of work to become an expert. R has a rather steep learning curve if you’re looking to move beyond the basics, so you’ll need some high-quality learning resources if you’re going to start your journey off on the right foot.


Let’s go to some of the best.

Try R


Code School’s brief introduction, Try R, is a fantastic way to learn the basics. It’s presented in an interactive format, making it more interesting and effective Bored With Programming Books? Try 3 Fun Ways To Level Up Your Coding Skills If you've ever tried to learn to code from a book, you know how boring it can be. Why not try some engaging options to make learning more quirky and fun. Read More than some other learning methods. You’ll learn about vectors, matrices, factors, basic stats, data frames, and how to extend R using outside libraries.

Best of all, the whole course is free. For a total beginner, this is tough to beat.


Explore Statistics with R

This course has three parts; the basics of R, exploring statistical concepts through programming, and a section in which researchers explain how they’ve used R and statistics to solve real-life scientific issues.

This course is focused on using R in the health sciences, but will be valuable for a range of people, from those who are familiar with statistics to those who are totally new to the field.


In a series of two-minute videos, you’ll go from the basics, like “What Is R?” to more advanced topics, including creating loops and running SQL commands in R to interact with databases. At the end, you’ll even learn how to make awesome coffee 8 Excellent Websites for an Improved Cup of Coffee Coffee is loved all over the world, but some coffee tastes better than others. Want a tastier dose of caffeine? Here are some sites that'll help you get started. Read More by timing your French press pourover with R.

If you’re looking for something a little different than the textbook-style learning of other resources, give this one a shot.


Kaggle Tutorial on Machine Learning


Kaggle is a website that hosts data analysis competitions that can win you a lot of money . . . but they’ll also help you get started with this introduction to machine learning 4 Machine Learning Algorithms That Shape Your Life You may not realize it but machine learning is already all around you, and it can exert a surprising degree of influence over your life. Don't believe me? You might be surprised. Read More with R. This is a quick, intermediate-level introduction to the relevant concepts, and it’s great if you’re interested in data analysis (and not just statistics) with R.

The primary things you’ll learn are DataCamp’s interface, decision trees, and random forests, which are great data modeling tools.

R Manuals


On the official R website, there’s a collection of manuals that cover a variety of topics, from the basics of R to instructions on how to write your own extensions. While you could read “Introduction to R” from cover to cover, it’s probably best used as a reference manual for when you run into problems and you need to find specific information about the language itself. The other documents on the list probably won’t come in handy until you’re an R expert, but this is a great page to have bookmarked nonetheless.

Econometrics in R (PDF Download), another free resource available from the website, is a popular resource for learning the language. It’s a bit dense, but it contains just about everything you’ll need to know to get started.

RStudio Tutorials [No Longer Available]


RStudio is an integrated development environment Text Editors vs. IDEs: Which One Is Better For Programmers? Choosing between an advanced IDE and a simpler text editor can be hard. We offer some insight to help you make that decision. Read More (IDE) for R — and although you don’t need to use it to become an R expert, you might find it very helpful. The RStudio website has a number of tutorials available, as well as links to other useful pages. There are book recommendations; an introduction to Shiny, a cool way to display your data results online; and information on R Markdown, another useful tool for sharing data.

There’s a mix of free and paid resources here, but if you spend a bit of time browsing around, you’ll find some really great things you can get without paying.

A Few More Worthy Resources on R

With its climbing popularity, you can find a few more sites for getting to know the language.

Start LeaRning!

As with any other programming language, the best way to learn is to find a problem that you’d like to solve and start designing a solution. With some determination and these resources available, you’ll be using R to analyze data sets in no time.

Are you working with R? What are your favorite R resources? Share them below so we can all learn from them!

Related topics: Education Technology, Programming.

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  1. Minli Zhu
    January 19, 2018 at 4:14 am

    Awesome! Thanks!

  2. Minli Zhu
    January 19, 2018 at 4:14 am

    Cool! Thanks!

  3. Ason
    January 17, 2017 at 10:52 am

    Awesome article concise clear and to the point. Please write one for SQL and Python!!!

    • Dann Albright
      January 18, 2017 at 11:27 pm

      I'll pass it along to the section editor that you requested SQL and Python versions. I'm sure there's a lot of great stuff out there!

  4. Anonymous
    December 4, 2015 at 8:16 pm

    What I would like to find is an R course that ignores anything in the language that is specific to statistics. I want to learn it first as a general purpose programming language and then in subsequent courses add in the parts (including data structures) that are specifically supporting statistical and large data applications.

    I never took a course in statistics nor do I want to at this time and I'm sure that there are a huge number like me that could otherwise benefit from using the language.

    • gd047
      December 6, 2015 at 9:15 am

      R is not a general purpose programming language. It is a software environment for statistical computing and graphics.

      • Anonymous
        December 9, 2015 at 8:39 pm

        Without the former it cannot be the latter.

    • Dann Albright
      December 9, 2015 at 7:20 pm

      GD is right on this one; it's going to be difficult to find a course that concentrates on R without statistics. That's its primary purpose. It can be used for other things, but I think if you're not into data science or stats, there are better options. What are you thinking that it would be useful for aside from stats?

      • Anonymous
        December 9, 2015 at 9:11 pm

        It has some roots in APL syntactically which is a language I used extensively once upon a time. I think it would make a great general purpose language for scripts and for algorithm development which is what I mostly used APL for. I found a course on Udemy

        which looks like it spends the first six sections on the base language before plunging into statistics so as soon as they support Firefox again I'll be checking that out.

        • Dann Albright
          December 11, 2015 at 6:06 pm

          That does look like a good course—if you do check it out, let us know how it is! I see that it starts getting into things that could be considered "statistics-specific" in section 4, which is pretty much the first one past the very basic programming principles. While you probably could use it to program non-stats things, I would imagine that there would be other languages better suited. I don't know a huge variety of languages myself, so that's just a guess. I'm sure R can be used for all sorts of things, but stats is really built into it, and that's what it seems to be most efficient for.