First of all, I want to say that if you want to learn advanced mathematics well, you need to make too much efforts, because before you learn advanced mathematics, you studied elementary mathematics, so we call it "draft mathematics", which means that primitive mathematics lays the foundation for advanced mathematics. If you failed in the past, you should redouble your efforts.

Scheme:

Study the book carefully and thoroughly, so that if your reading involves the original content, don't be afraid of trouble, get to the bottom of it, just turn over the previous books and know, and don't be shy to ask questions. There are brothers and sisters in primary and secondary schools at home, so you should ask them more and learn more about the previous knowledge, so that you can use it flexibly. Ask the teacher frequently, no matter how simple the question is, as long as you don't understand it, don't care about face. There are still some questions to be inferred. At the very least, you should know what you have done and what you have used in each step, and then classify the problems. When you see similar problems, you should know how to use your own knowledge set.

In this way, your math will improve quickly. But you must work hard and remind you that it is not easy for a good student to be logical, step by step, not jump, and be careful. Be calm when you do the problem.

I hope you do well in the advanced mathematics exam!