I agree with everything here, including the praise for Matloff's book; it should be the very first book any serious R user picks up. But Matloff is no longer a

I agree with everything here, including the praise for Matloff's book; it should be the very first book any serious R user picks up. But Matloff is no longer alone: Hadley Wickham's Advanced R is now also a must-read for R programmers. http://www.amazon.com/Advanced-Chapman-Hall-CRC-Series/dp/1466586966 http://www.amazon.com/Advanced-Chapman-Hall-CRC-Series/dp/14...