Here are my hints on revising. If you have some better ones, please tell me - I'd love to know.

1. Start at least 2 weeks in advance. I know you try not to do this out of principle because your teacher tells you to, but it's good to start early.
2. Buy some paper. You'll need this. The best way to revise, in my opinion,is to read through the books and write it all down in note or spider diagram form.
   
3. Shout very loudly at anyone in your close family who tries to disturb you. This doesn't directly help your revising, but it makes you look purposeful, which stops everyone else telling you you should take your work more seriously. One of the most annoying things when you finally have started revising is to have people telling you that you should.
   
4. Accept any offers of free revision material almost before they are proposed. Variety of work is important.It stops you finally grinding yourself into a jellified heap.
   
5. Don't spend more than 50 mins on any one subject in a block. After each 50 min block, allow yourself a break of 10-20mins. This gives you a wonderful sense of achievement and reward. I found that if I did spend more than this, nothing stayed in my brain. This is bad,because you think you've learnt something when you haven't
   
6. Drink a lot. It's easy to run out of liquid when you're revising, because you're sat there for hours doing nothing in a hot room, and don't notice that you're thirsty.
   
7. Jeer at your friends who haven't revised yet. This makes you feel good and spurs you on to further efforts. This may sound foolish and retarded, but it really does work.
   
8. If you are doing GCSE (like me) use the BBCs revision website www.bbc.co.uk/education/revision. It has lots of little CGI tests and things which are really helpful.
   
9. Buy a past paper book and work through it religiously. Then go away and revise everything you fouled up on. Keep doing this until the exam date, even if you think you've got everything perfect.
   

Hope these are helpful. Good Luck!