Step 1: lay a solid foundation: how to put it? First of all, you should be familiar with all formula theorems, such as complete square formula and trigonometric function formula ... you must understand this first. If you don't understand, you'd better divide it into chapters. Read a book first to get familiar with this part of the basic knowledge, then do the topic immediately and finish the topic in the textbook, so that you are basically familiar with it.
Step 2: unit training: that is, each unit should do two sets of questions to check its mastery.
The third step: simulation training: that is, doing simulation questions.
Step 4: Check the loopholes and fill the gaps: this is a way to get up a flight of stairs. First, check the wrong questions and learn from them. If there is a standard answer to the question, you'd better look at the standard answer at this time. It is very helpful to learn the problem-solving skills inside.
The key is to be able to calm down and do the problem, otherwise you will accomplish nothing. Everything in the world has a process, so no matter what your level is, you must know how to move forward step by step.