First, read the table of contents above. What do you want to learn? The catalogue will tell you what many people have learned in a semester. Most of them can't answer perfectly, so read the catalogue several times first and copy it by hand, which is also convenient to sort out the knowledge framework.
Secondly, it is necessary to judge whether the basic knowledge is unreliable. In fact, the best way to learn mathematics is to read textbooks and write examples. Say to understand, how to understand, define clearly, practice examples, and practice exercises after class in textbooks. As a textbook used by junior high school students all over the country, the gold content will not be low! There is a reason to exist, and it doesn't take too much time to do problems when learning mathematics. You don't know what it's about. It's no use doing it. You will forget it for a long time, or you can't make good use of it.
Furthermore, the previous table of contents has been copied out. When I study each chapter, I summarize what I have learned in my own short words and write it at the back of the corresponding table of contents, so I should be good at understanding and summarizing.
Also, when doing the questions, you should pay attention to the questions clearly and decide what to ask before you answer. If you take the exam, do the questions you can do first to ensure that you don't lose points in this part. If not, you should compare it with what you have learned and deduce it slowly.
Finally, it is up to you to decide your own speed by your own efforts to a certain extent.
Having said that, what I want to tell you is, don't just do the questions, learn the methods. Of course, this method is also applicable to other disciplines. I hope I can help you and wish you progress in your studies.