Reading without brushing the questions is all hooliganism. The topics in college books are simple. It is no problem to study chapter by chapter and then do textbook exercises to cope with the exam. If you have problems understanding some contents, such as calculus, you can draw more. However, it is not enough to study advanced mathematics in depth. Compare the textbook exercises with the high number part of the postgraduate entrance examination The exercise in the textbook is to find confidence for you. First, you can choose online classes according to your own habits, or buy a tutorial material. Online courses are easy to find. Tutorial materials Beginners suggest that you brush books before buying. Otherwise, this book will make you give up from the beginning. You can find a math textbook for the postgraduate entrance examination in previous years, which is cheap and has little change in content. Li Yongle's review book or Zhang Yu's advanced math 18 lecture, etc., the example exercises here are very classic, and the difficulty is much higher than the undergraduate study requirements. Even if you have finished all the problems in the book, you won't be discouraged to start doing these data examples. This is inevitable. Being able to make 80% independently for the first time can be said to be a genius. Doing more and seeing more and finding ideas will be very smooth, and the postgraduate mathematics will not be like junior high school. It is very important to insist on brushing questions, and don't be superstitious about methodology.