this guide was developed for the distance MS in Applied Data Science

Start here to Install R and RStudio – A Step-by-Step Guide for Beginners

Advanced R by Hadley Wickham

API with R: Getting started with httr

R Studio Cheatsheets

R Tutorial

Introduction to Data Science with R by David Langer [Videos on YouTube]

R for Data Science by Garrett Grolemund

R Programming for Data Science [this book can be downloaded for free]

Text Mining with R: A Tidy Approach by Julia Silge and David Robinson