Just caught the bug, so I thought I'd buy some and try it. I've been reading a bunch of stuff on it on http://stopmotionanimation.com/ and some other places. Also Check out http://justinrasch.blogspot.com/
I'm putting this on hold for a bit. I've sculpted a couple things but I need to focus myself on landing an animation job. I let myself get a little scatter-brained sometimes, and I end up doing several things halfway. I'll plan a little stopmo project for myself to do in the future once I've reached my first goal.