Head over to Revolutions Blog for a list of PDF and powerpoint resources for making the transition to R from other programming or stats languages. All of these notes come from the New York R meetup. I enjoyed browsing the meetup's files - lots of powerpoints, PDFs, and example R data files for various topics, including several slideshows on ggplot2. Don't forget the ggplot2 tutorial I posted here earlier this week if you're completely new to ggplot2.
If you're coming from SPSS or SAS, I've read good things about Robert Muenchen's book R for SAS and SPSS Users, which can be found on Amazon (~$50), or downloaded for free from http://rforsasandspssusers.com/.
Revolutions: Coming to R from SQL, Python, SAS, Matlab, or Lisp
Getting Genetics Done by Stephen Turner is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License.
I believe the latter link to Robert Muenchen's work is to a short preliminary document-- the book is much lengthier and more helpful.
ReplyDeleteI don't usually self-promote, but for general users, a book I wrote with Nick Horton is effectively a meshed set of documentation for SAS and R. It can be a big help in transitioning if your investment in SAS is deep. See http://www.math.smith.edu/sasr for our book's home page and http://sas-and-r.blogspot.com/ for a blog with examples worked in SAS and R.