Slides for my ggplot2 tutorial are available on speakerdeck
All the material for a tutorial I give on ggplot2 is on Github:
ggplot2: Elegant Graphics for Data Analysis, the ggplot2 book by Hadley Wickham. Hadley and Carson Sievert are working on a new edition. You can watch the whole process and get all the content from GitHub:
ggplot2 online docs
ggplot2 package development on github
The R Graphics Cookbook, an excellent book by Winston Chang. I really really love this book.
A ggplot2 tutorial by Paul Hiemstra, one of many excellent R courses he offers.
A quick introduction to ggplot2 by Karthik Ram. Slides and code from a 2 hour talk/hands on presentation for ggplot2 beginners.
Why do I teach ggplot2? Shouldn’t beginners see “base” graphics first? I think not. David Robinson explains it well in Don’t teach built-in plotting to beginners (teach ggplot2).
Zev Ross has a lovely blog post: Beautiful plotting in R: A ggplot2 cheatsheet