First, do a good preview.
Preview is the first link to learn all subjects well, so preview should do:
1, look at the textbook, find out what old knowledge this section is related to, and review this knowledge.
2. Write a summary of this part.
3. Find out the key points and difficulties in this section.
4. Find out the key problems that should be solved in class.
Second, class.
A very important part of learning every subject is to attend classes. Listening to lectures should do the following:
1, with a clear learning purpose.
2. Pay special attention to "understanding" in class.