Getting Started With R
The first step in learning R is downloading and installing the software package. You can download the program from http://www.r-project.org/ and following the 'download' link. You can also use the program R-Studio, a freely available 'R' working environment that allows you to see your declared variables, installed packages, and generated graphs in a single program window. You can download the R studio program from http://www.rstudio.com
You should download the package for your operating system, run the included installer package and then launch R to get started.