the ap exam is on may 7th i believe, and our teacher has advised us to start studying 2 months in advance. but i want to get a head start, so i started studying yesterday. im using the princeton review book, and i think it works really well. each day im gonna spend about 45 minutes reviewing and highlighting notes as i get it in my head. does anyone have any advice on this exam that they can give me?? past takers please 