Hopefully one day this page becomes a vast ocean of resources for learning data science programming.
R for Data Science
R for Data Science Exercise Solutions
Advanced R
R Packages
What They Forgot to Teach You About R
Functional Programming
Mastering Shiny
Mastering Software Development in R
Hands-On Machine Learning with R
R Markdown: The Definitive Guide
Text Mining with R
Forecasting: Principles and Practice
Feature Engineering and Selection
Interactive web-based data visualization with R, plotly, and shiny
Happy Git and GitHub for the UseR
Mastering Spark with R
Programming with dplyr
Using ggplot2 in packages