Help on 1st Kingdom Hearts, please?

I'm sittin' home bored at 11:36 at night and have NOTHING to do, so i decided to play some Kingdom Hearts, but i'm kinda stuck. Help, please! I'm at the part where Alice disappears in Wonderland after you fight off the card soldiers. I've been to the Tarzan part and I'm lost there too. Help from anyone who has beaten it or has gotten past that part would be good. Cheat codes or hints would be a lot of help too. Thanks! :)