Hmm, yourbest bet is to decide what kind of learner you are? audio or visual. do you learn better throw diagrams etc or through being told stuff.
If you learn best through diagrams etc, then make posters and flash cards. put them in places you're likely to see them. make diagrams related to the area.
if you learn best through being told stuff, make a tape of key revision notes.
If you feel you learn best through doing activites, then the revision cd-roms can help. They also help with the visual side.
Also, teachers may have old exam papers that they'd let you try. Always helps.
Also, 10 A*'s is a high aim. don't be dissapointed if you don't get them.