Dan's R Cheat Sheet: a 2page summary of the functions I use the most (other R cheat sheets) Reference WebsitesQuickR: an excellent searchable reference guideR Cookbook: cookbookstyle howto wiki, particularly useful for experimental psychology Penn R study group: detailed reference in the form of tutorial notes ggplot2: documentation website for our main graphics tool
A great ggplot2 workshop
A chart chooser: simple examples of many different kinds of ggplot graphs
A nice guide to themes
Matlab/R Reference guide: A handy reference for both R and Matlab (our other main analytical tool) R Tutorial: an organized and clear R tutorial (Tip: use the "R Tutorials" menu in the right navigation bar)
Try R: a very nicely designed basic R tutorial from O'Reilly and Code School Resources to help you learn and use R: from the Institute for Digital Research and Education at UCLA Intro to R: a series of short videos (26 minutes) demonstrating basic R tasks or concepts
Applied R for the quantitative social scientist: a clear introduction to R basics, including multilevel modeling
R Bootcamp: a tutorial developed by Jared Knowles
R Guide: A simple guide developed for people doing (personality) psychology research
R Tutorial (by Kelly Black): a good introduction to R basics
Learning R for researchers in Psychology: link goes to resource list, which is part of a blog
CommunityRlangPsychR R Bloggers: A blog aggregator pulling together posts from over 140 bloggers who write about R in English StackOverflow  R: A great community Q & A site. If you have a problem, they can usually help you. BooksR in a Nutshell by Joseph AdlerR for SAS and SPSS Users by Robert Muenchen Analyzing Linguistic Data by Harald Baayen ggplot2: part of the Use R! series of focused guide books Books that teach statistics and R together: Learning Statistics with R by Daniel Navarro (ebook is free!) Discovering Statistics Using R by Andy Field, Jeremy Miles, & Zoe Field
