Did you score 17 or above? 

Awesome! Just go through your preferred books one last time before your exam.

Score between: 11 to 16. Good. Spend more time with these chapters please. 

Socre: 10 or less: Dude! Two words for you: "Be serious!" Everything will fall into place once you DECIDE to improve. So keep at it.

You can figure out most of these stuff yourself. If you still need suggestions after this then go to the suggestions page on the site!