His book "Head First Data Analysis" seems a fairly gentle introduction to data analysis. I've read it and it's enough to learn a couple of tricks. Where to go f

His book "Head First Data Analysis" seems a fairly gentle introduction to data analysis. I've read it and it's enough to learn a couple of tricks. Where to go from here it's harder to figure out. I'm refreshing my stats classes with the Pearson, and looking for a good introductory R book. This stats course from Berkeley isn't bad, too: http://www.stat.berkeley.edu/classes/s133/schedule.html http://www.stat.berkeley.edu/classes/s133/schedule.html