If nothing else, learn what a spin is, how it develops, factors that must be
present for a spin to occur, and of course how to recover. One of the best
sources for material on spins is from Rich Stowell. www.richstowell.com I
haven't seen any posts from Rich in awhile, but his videos and books can
help provide you with a thorough understanding of spins before you go up
with an instructor. Remember, CFI's must undergo "spin training" but it is
severely limited. Find an instructor with extensive spin training. I think
I'm only up to about 20 spins so far.

Jim