R

Going deeper with dplyr: New features in 0.3 and 0.4 (video tutorial) · March 9, 2015 · R tutorial

Should you teach Python or R for data science? · February 2, 2015 · R Python popular

In-depth introduction to machine learning in 15 hours of expert videos · September 2, 2014 · machine learning R popular

Hands-on dplyr tutorial for faster data manipulation in R · August 25, 2014 · R tutorial

Example of linear regression and regularization in R · April 28, 2014 · machine learning R

Tidying "messy data" in R · March 9, 2014 · R tutorial