R functions
Future Plan:
R for Data Science (2e) # https://r4ds.hadley.nz/
Applied Predictive Modeling - A great text specializing in statistical learning aka predictive modeling aka machine learning with R. # https://www.amazon.com/Applied-Predictive-Modeling-Max-Kuhn/dp/1461468485/ref=sr_1_1?ie=UTF8&qid=1487759459&sr=8-1&keywords=applied+predictive+modeling
Advanced R by Hadley Wickham - A truly advanced book for expert R users, especially those with a programming background. Hadley Wickham is the R guru.. # http://adv-r.had.co.nz/