Anyone that uses a calculator or spreadsheet, or analyzes numerical data at least weekly should seriously consider learning and using R. This includes epidemiologists, statisticians, physician researchers, engineers, and faculty and students of math and science courses, to name just a few. When you learn and use R regularly you will save significant amounts of time and money. It's a complete environment for data analysis and graphics. It's straightforward programming language facilitates the development of functions to extend and improve the efficiency of your analyses. R is available for many computer platforms, including Linux and Windows.
R comes as source or binary code.
I assume most readers will be using R in the Microsoft Windows environment. Rwinst.exe will create a new directory, rwXxxx , named after the version that is being downloaded, for example, rw1011 for version 1.1.1. This is how R is use interactively. From the R command line, you can also run a list of R commands that you have saved in a text file. Finally read these notes sitting at a computer and use R interactively.