& 
Overview
R is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues.
R is the fastest growing statistical software/language and is rapidly overtaking all others (e.g. SPSS, STATA, & SAS in popularity and use.) For a view of where it's come from, check out R: Past and Future History (from 1998).
RStudio Desktop is a powerful and productive user interface for R. It’s free and open source, and works great on Windows, Mac, and Linux.
Contents
| Table of Contents | ||||||
|---|---|---|---|---|---|---|
|
...
- Product name: R
- Product home page: R Project for Statistical Computing
- Product name: RStudio
System Requirements
R runs on *inux, Windows & Mac operating systems and so does RStudio.
...
Licensing & Cost Information
R is & RStudio are freely available from the publisher. Freely available refers to software which is legally available for no monetary cost to the college or individual. Note that there may still be usage limitations (such as personal use only) set down by the license agreement. We always recommend that you at least skim a license agreement before you agree to its terms.
Regardless of licensing, please place all requests for software through ITS (see below). This way, the college may be able to save significant amounts of money by including the additional license(s) under existing agreements.
...
This section should remain the the form of three questions and the statement on "non-commercial" use.
- Can I use R/RStudio for research? Yes, but click here for compliance and validation issues
- Is R/RStudio limited to educational use? No
- Is R/RStudio available for personal use? Yes
- This Read the license agreements regarding whether this software is available for non- commercial use only.
...
- .
Home Use
You can install R & RStudio for your personal use and even continue to use it after you leave Carleton.
...
Through our licensed access to Lynda.com, you can get go through the 2+hour 
"Up and Running with R" and/or try a more detailed (6 hr) look via "R-Statistics Essential Training" (This one includes a bit on RStudio as well. RStudio is a convenient and free interface to R that makes it easier to navigate.)
Note that you need to login via your Carleton credentials for access to Lynda online courses.
See also:
- A wealth of Online Learning opportunities identified by RStudio.
- In particular, read the R Style Guide for advice on how to write readable, maintainable code. (This is how other R users will expect your code to look when you share it.)
- RStudio: Support & Documentation
- Open Learning Initiative free course on Probability and Statistics (in which the assignments may be completed using R.) From Carnegie Mellon University.
- A (very) short introduction to R (and Rstudio)
- UDacity's Data Analysis with R: Investigate, Visualize, and Summarize Data (Fee-based training that includes a free trial period.)
- CRAN is a network of ftp and web servers around the world that store identical, up-to-date, versions of code and and documentation for R (Manuals).
Avril Coghlan maintains these 3 HTML or PDF "books":
...