There are a number of free R tutorials available, and several (not free) books that have good information. For more recommendations look at the CRAN contributed area.

Tutorials

Each of the following tutorials are in PDF format.

  1. P. Kuhnert & B. Venables, An Introduction to R: Software for Statistical Modeling & Computing [zipped]
  2. J.H. Maindonald, Using R for Data Analysis and Graphics
  3. B. Muenchen, R for SAS and SPSS Users **
  4. W.J. Owen, The R Guide
  5. D. Rossiter, Introduction to the R Project for Statistical Computing for Use at the ITC
  6. W.N. Venebles & D. M. Smith, An Introduction to R **

Books

The following books are available for purchase online. Amazon provides a preview of each book's contents.

  1. M. Crawley, Basic Statistics: An Introduction using R
  2. P. Dalgaard, Introductory Statistics with R
  3. B.S. Everitt & T. Hothorn, A Handbook of Statistical Analyses Using R (2nd ed.) **
  4. J.J. Faraway, Linear Models with R
  5. J.J. Faraway, Extending the Linear Model with R: Generalized Linear, Mixed Effects and Nonparametric Regression Models
  6. J. Maindonald & J. Braun, Data Analysis and Graphics Using R: An Example-based Approach
  7. P. Murrell, R Graphics (2nd ed.)

 

** Much of the inspiration for this site came from these texts.
I highly recommend them!!