Law MCQ

Hello guys I am a first year law student and I have an mcq upcoming in 3 weeks for 4 of my modules which are criminal,public,contract and English legal system and method law.I was wondering of anyone had any tips on how I should I revise and prepare because when I did my gcse and a level I resorted to cramming the night before which worked for me but since I've never done an mcq before and I have no idea on how to prepare,any advice would be much appreciated.