Mathematics is a very strange subject. If you can't solve the problem, you will lose interest, and the more you learn, the worse you will become, forming an infinite loop. But mathematics is a relatively easy subject to learn. For mathematics, the most basic and best way is to do more problems. First of all, find the right topic to do. Some people get dizzy when they see the questions, mainly because they choose the wrong questions. It is too difficult at first, and they will lose their enthusiasm and sense of accomplishment. So I suggest you do something simple first. Then, in a similar, slightly more difficult way, don't worry about things that can't be done. You can read more examples in the book, not just read them. When copying, you must be careful to understand why every step is on it and what formulas and theorems are used. I will remember more times, so that when I do my own problems, I can get a comprehensive understanding. If you are sure you have no time, you can do less, because math homework is enough. I suggest you copy more examples, be sure to understand each process, and apply the skills of examples when doing your homework. This is a process. Stick to it and it will be much easier to learn in the future. The examples in the book are very classic, don't just read them. If you only look at them, you will feel that you know everything, and you must start writing math. Also, you'd better prepare an error book and collect the mistakes you usually make. Whether it is unintentional or unintentional, or what you think is classic, write it down. If you have time to look at it, you will gain a lot. If you still have a heart, write down your own experience for each question and make a key point in one or two sentences.

If we want to stick to it, mathematics is a subject that needs many hands.

Pure own experience, pure hand tour, I hope I can help you.