O'Reilly Media book: Learning R

http://shop.oreilly.com/product/0636920028352.do
Learn how to perform data analysis with the R language and software environment, even if you have little or no programming experience. With the tutorials in this hands-on guide, you’ll learn how to use the essential R tools you need to know to analyze data, including data types and programming concepts.

O'Reilly Media book: Exploring Everyday Things with R and Ruby

Exploring Everyday Things with R and Ruby:
Programming is not just for geeks. If you’re curious about how things work, and want to get programmatic solutions to everyday problems, this intriguing book will help you find what you’re looking for. By using some fundamental math and simple Ruby and R constructs, you’ll learn how to model the problem and work toward a solution.

book: The Art of R Programming

The Art of R Programming - O'Reilly Media

O'Reilly Media book: Getting Started with RStudio

Getting Started with RStudio - O'Reilly Media

R Graph Cookbook Book & eBook | Packt Publishing Technical & IT Book and eBook Store

R Graph Cookbook Book & eBook | Packt Publishing Technical & IT Book and eBook Store

2011-10-17: 70% off on the e-book

R Programming - Wikibooks, open books for an open world

R Programming - Wikibooks, open books for an open world

The R Project for Statistical Computing

The R Project for Statistical Computing

R (programming language) - Wikipedia, the free encyclopedia

R (programming language) - Wikipedia, the free encyclopedia

R Cookbook - O'Reilly Media

R Cookbook - O'Reilly Media

O'Reilly Media book: R in a Nutshell

R in a Nutshell - O'Reilly Media