Newbies (and others!) may find the R Reference Card made available by Tom
Short and Rpad at http://www.rpad.org/Rpad/Rpad-refcard.pdf or on the
"Contributed" link on CRAN (where some other reference cards are also
linked) useful. It categorizes and organizes a bunch of R's (S's) basic,
most used functions so that they can be easily found. For example, paste()
is under the "Strings" heading and expand.grid() is under "Data
Creation."
For newbies struggling to find the right R function as well as veterans who
can't quite remember the function name, it's very handy.
-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA
"The business of the statistician is to catalyze the scientific learning
process." - George E. P. Box