R, while an excellent toolkit in many ways, suffers somewhat from a deficiency of useful programming tutorials. It's not as though I'm new to that style of dat

R, while an excellent toolkit in many ways, suffers somewhat from a deficiency of useful programming tutorials. It's not as though I'm new to that style of data manipulation—I loved APL when I was younger—but almost all R documentation out in the wild is either "how to do some elementary statistical thing" or "reference", with little in between. "R in a Nutshell" is the best I've found so far at filling in the gaps that exist in my knowledge.