What I do is keep a word document full of plot synopses' and such that I can then use to connect plot holes that were covered by the new movies and new plot points that need to be answered, and then write down how it all connects, then if I still am aching I erase all of it and make a new synopses of everything I just saw. That or play Final Fantasy Tactics Advance I guess xD
EDIT: Sorry, didn't realize you haven't spoiled yourself on any of it yet! In that case, I write plot synopses' of the titles already out and a list of things I want answered for the new games, and then have fun comparing and contrasting with the actual product once it comes out
Jolly good show, sir. I will try that