Visit the R Project website for downloads and installation instructions.
There are several ways to learn R at Swarthmore. If you're in a class that requires R, please talk with your instructor first. There are also resources available through the open source R Project and various blogs and sites. Swarthmore has a limited supply of licenses for online training through DataCamp as well, targeted for Faculty and Staff users who are interested in learning R for use in their research and/or classes.