If you want to learn R programming, these 5 free resources will help you out!
R for Data Science r4ds.had.co.nz/index.html
GGplot2 ggplot2-book.org/index.html
Advanced R Programming adv-r.hadley.nz/index.html
R Packages r-pkgs.org/
Text Mining with R www.tidytextmining.com/