I don't know why people just don't call it FEAST, since the T stands for test anyway. It's similar to when people say PIN number and ATM machine but I guess I'm being a bit pedantic :P
Anyway there's a fair amount of information on FEAST in the Eurocontrol thread, combined with much advice telling you not to prepare. I wouldn't worry too much either way, once you get into it on the day it's fairly clear what you need to do.