In a word, it is beneficial, but it is important to understand and master the methods, and what should be mastered must be mastered. Generally, there will be some test questions in the textbook set, so you can have a look.

But fully understanding textbooks will have some negative effects. My teacher is not allowed to use this textbook. Because the content of the textbook is very detailed, students are too lazy to think, and they will not think after a long time. It's best to recommend the textbooks to be used in middle schools. Because knowledge is getting more and more difficult, using the whole solution of teaching materials can help you understand.

Or let the students preview first, otherwise it is also a good idea to look at the overall solution of the textbook.

I hope it helps you.