(http://xkcd.com/552/)

- Get R from here

- Get RStudio from here

- R code for first two statistics modules
- R code for the third R module

R tutorials
- Promising looking interactive tutorial
- Another tutorial
- This has a lot of detailed info - probably overkill for just learning the basics
- A nice website with a series of exercises introducting R. Very nice
- You can also just search for r tutorials online and will get tons of pages.
- This page has a good comparison of how widely statistical packages are used. The plots make it clear that R's popularity and resources are increasing at an incredible pace.