The official website of R is the Comprehensive R Archive Network (CRAN) at www.cran.r-project.org. As of writing of this book, the most recent version of R is 2.15.1. This software can be downloaded for the three platforms Linux, Mac OS X, and Windows.
A Linux user may simply key in
sudo apt-get install r-base in the terminal, and post the return of right password and privilege levels, the R software will be installed. After the completion of download and installation, the software can be started by simply keying in
R at the terminal.
A Windows user first needs to click on Download R for Windows ...