1. Preview before class. Because college courses are specialized courses, you may have to attend two or three classes a day, so there are many things to learn at the end of the day. It's easy to get distracted in class and don't know what the teacher is talking about. You need to preview before class and have a general understanding of the content of tomorrow's class. You can mark the places that you can't listen to, so that the whole class process will have a focus.

2. Take notes in class. I believe many people think they understand in class, but they don't know how to do their homework after class. Therefore, it is very important to take notes in class and write down the key points mentioned by the teacher, so that you will get twice the result with half the effort in the final exam and you will not be confused by a big book.

3. Review after class. Take time every day to review whether you have mastered what you have learned, review your notes and textbooks regularly, and do some related exercises. You will definitely understand these contents more deeply.