Links
First, get R from cran.r-project.org or one of the many mirrors.
Second - Get help learning R. Below are some resources.
Cheat Sheets - A collection of various cheat sheet by RStudio.
Quick R - GREAT page.
Cookbook for R - GREAT page.
Gardeners Own - Using R for statistical analyses - A good web page based on a book looking at different statistical methods.
The R Project for Statistical Computing - Home page for R
Graphic
GGplot2 by Hadley Wickham - Excelent information by the man that wrote the book on GGplot
Quick R - GREAT introduction page.
Installing R on Linux