Start early, write concise notes (dont write pretty notes in neat handwriting cause it'll take up all of your time and I can guarantee that you wont even use them), make visual aids (posters/flash cards), do every past paper on the face of the earth... no procrastinationm, regular breaks, eat well, sleep well and take time off (with hobbies) and you wont need to live off junk food, sleep 2hrs a day and rely on energy drinks.