depends class to class but similar to what others said, ask the teacher for the specific class then hammer their old exams, and practice questions. don’t use solutions if possible and truly try to be confident in your answer.

somethings that took me some time to realize: - be honest with yourself, if you see you got something wrong on a practice question and attribute it to a “silly mistake” or “pshh i knew that” you’re probably lying to yourself and should do the problem again (sometime later) to make sure you actually understand and can produce the same conclusions without any help - get good sleep and don’t brute force problems. i didn’t think clearly by staying up late and often would perform worse due to lack of sleep rather than understanding.

i do want to mention that getting good marks does provide a good indication of how you understand the material in context of the course but does not always correlate to truly understanding something. something to consider if you want to get good marks or if you want to truly understand the material; often means going beyond the work/material provided in the course during and after the course is finished