Answer:
There is no one true answer to your question, but generally you want to focus on topics, revise your notes, and practice with past exam samples. Brush up on topics that are hinted to be on the exam and solidify your understanding on any concepts that you are struggling with. Don't be afraid to ask your professor or peers for help, a good way to better understand something is by having someone else explain it to you. Also, you should never cram information before an exam because it does more harm than good. Rather, space out your studying to a few hours a day over a period of time to better absorb and retain the information. Best of luck on your exams!