First of all, you must read the textbook and the above examples, which are classic and don't need to be done together, because the above figures are generally difficult to calculate, and the methods must be mastered. It's the first one, and then you must have a good tutorial book. Personally, I suggest that you use the five-year college entrance examination for three years to simulate, and Wang Houxiong (difficult but good) is a good foundation.
Then there are more problems. In exam-oriented education, the tactics of asking questions about the sea are still very useful. The more problems you see, the broader your natural thinking will be. However, if you just want to preview and not study in depth, I suggest you read the book first, and then read the explanation part of the tutorial instead of the example part. In short, you should sum up more. A lot of knowledge is universal, such as triangle exchange can be used in plane geometry, vector can be used in solid geometry and so on.
Typing is not easy. I hope the landlord will give me a good evaluation. You can keep asking me questions.