# Learning R: Index of Online R Courses, October 2015

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by Joseph Rickert

Early October: somewhere the leaves are turning brilliant colors, temperatures are cooling down and that back to school feeling is in the air. And for more people than ever before, it is going to seem to be a good time to commit to really learning R. I have some suggestions for R courses below, but first: What does it mean to learn R anyway? My take is that the answer depends on a person's circumstances and motivation.

I find the following graphic to be helpful in sorting things out.

The X axis is time on Malcolm Gladwell's "Outliers" scale. His idea is that it takes 10,000 hours of real effort to master anything, R, Python or Rock and Roll Guitar. The Y axis lists increasingly difficult R tasks, and the arrows within the plot area are labels increasingly proficient types of R users.

The point I want to make here is that a significant amount of very productive R work happens in the area around the red ellipse. So, while their is no avoiding "10,000" hours of hard work to become an R Jedi knight, a curious and motivated person can master enough R to accomplish his/her programming goals with a more modest commitment. There are three main reasons for this:

- R's functional programming style is very well suited for statistical modeling, data visualization and data science tasks
- The 7,000
^{+}packages available in the R ecosystem provide tens of thousands of functions that make it possible to accomplish quite a bit without having to write much code - Numerous, high quality books and online material devoted to teaching statistical theory and data science with R

If you have some background in some area of statistics or data science a viable strategy for learning R is to identify a resource that works for you and just jump into the middle of things, picking up R as you go along.

The lists below link to courses that can either start you on a formal programming path, or help you become a productive R user in a particular application area. Some of the courses are "live events" that you take with a cohort of students, others are set up for self study.

The courses devoted to teaching R as a programming language are

- The Data Scientist’s toolbox
- R Programming
- Introduction to R Programming
- Introduction to R
- R Programing – Introduction 1
- Introduction a la programacion estadistica con R
- O’Reilly Code School

The first two courses above are from Coursera's Data Science Specialization sequence. Taught by Roger Peng, Jeff Leek and Brian Caffo they are probably the gold standard for MOOC R courses. I am a little late with this post. The Data Scientists's toolbox started this past Monday but there is still time to catch up. The third course, Introduction to R Programming, is a relatively new edX course from Microsoft's online offerings that is getting great reviews. The fourth course on the list a solid introduction to R from DataCamp. R Programming – Introduction 1 is a beginner's introduction to R taught by Paul Murrell or Tal Galili. Next listed, is a Spanish language introduction to R from Coursera and O'Reilly's interactive Code School course.

These next three lists contain courses from DataCamp and statistics.com and online resources from R Studio that introduce more advanced features of R by buildng on basic R programming skills. Note that the final course on the DataCamp list introduces Big Data features of Revolution R Enterprise which is available in the Azure Marketplace.

- Intermediate R
- Data Visualization in R with ggvis
- Data Manipulation with dplyr
- Data Analysis in R, the data.table Way
- Reporting with R Markdown
- Big data Analysis with Revolution R Enterprise

This next section lists courses from the major MOOCs, and non-MOOCs DataCamp and statistics.com that use R to teach various quantitative disciplines

**Coursera Courses**

- Data Analysis and Statistical Inference
- Developing Data Products
- Exploratory Data Analysis
- Getting and Cleaning Data
- Introduction to Computational Finance and Financial Econometrics
- Measuring Causal Effects in the Social Sciences
- Regression Models
- Reproducible Research
- Statistical Inference
- Statistics One

**edX Courses**

- Data Analysis for Life Sciences 1: Statistics and R
- Data Analysis for life Sciences 2: Introduction to Linear Models and Matrix Algebra
- Data Analysis for life Sciences 6: High-performance Computing for Reproducible Genomics
- Explore Statistics with R
- Sabermetrics 101: Introduction to Baseball Analytics

**Udacity Course**

DataCamp

statistics.com

Finally, here are a couple of google apps and Swirl, a new platform for teaching and learning R that may be useful for learning on the go.

It's time to "go back to school" and make some headway against those 10,000 hours.

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