I use revision cards which despite a lot of groaning from my friends about how boring they are, actually work for me. I go through my notes, and make clear, key points on the cards. These jog my memory, so for a big subject like geography, I might write 'Coasts' and then 'deposition' with a definition. Then I revise from my class work, and read through my cards every day as a reminder. This works really well as long as you don't cram the cards too much. The point is that they are clear and the info is there at a glance.
Also, the night before just relax, you won't learn anything else at this stage! Good luck!