This is essentially a dump of my bookmarks, and what I have on my desk.
Getting started:
- A tutorial video on R
- John Cook's introduction to R for programmers
- R reference card
- Interactive tutorial: Introduction to R
Advanced:
- The R-Gallery
- The R Wiki
- Quick-R on advanced statistics
Books:
- The R Book (Covers the basics, classical statisitical tests, basic statistical modeling (ANOVA, ANCOVA, GLM, non-linear models, etc.), advanced statistical modeling (tree models, time-series analysis, spatial statistics, survival analysis, simulation), and twiddling with the graphics output.
- R Graphics (How to make R graphics look sharp)