You can look at the high numbers of Tang Jiafeng and Zhang Yu. Teacher Tang pays attention to the foundation. You can watch the videos of knowledge points in his college textbooks first. Zhang Yu is suitable for a better foundation. You can look at their foundation, strengthen it, and sprint lessons later. You can read Mr Li Yongle's linear algebra. Probability theory is found in Mr. Tang Jiafeng and Mr. Zhang Yu. If you consider reference books, you can match them.

First of all, we should emphasize mathematics. Math is difficult, so be sure to watch the video! The videos recommended by mathematics are Zhang Yu, Tang Jiafeng, Li Yongle and Lin Li. But not necessarily money. You can call me if you need to. As long as there is a 19 postgraduate video, you can share it with everyone. No money, no money, save your character. You must have a long-term relationship with mathematics, don't dislike her, don't be tired of her, you will find her charming duck after studying for a long time. First, should I pay for the online class? Secondly, I suggest you join a group of like-minded people to work together, which can be WeChat or qq.

What I want to say is that you can talk to any teacher (of course, there must be good and bad teachers), but if you finish one teacher's class, then you don't have to listen to other teachers' classes (because 90% of the content is the same, watching other teachers' classes will definitely affect your progress, and the most taboo in science is to watch videos without doing anything. The teacher is only responsible for explaining the knowledge points, and mastering the knowledge points depends on you to do more questions.

If you can't stand the teacher's incompleteness or lack of skills, you can search the corresponding content of other teachers on the Internet alone (note that I'm not talking about the little teacher on the Internet ~ I'm looking for a famous teacher! ), or wait for the strengthening stage or the sprint stage to change to a teacher you like (to be honest, you can't understand what one teacher said, and maybe you can't understand what other teachers said. Don't doubt that it is the teacher's problem. If you don't understand, listen to it several times. Then finally, I said that several teachers I agree with are worthy as follows: Shu Gao: Wu Zhongxiang and Zhang Yu (also listen to Gao Kunlun, they don't talk about conflicts), line generation: Li Yongle and Zhang Yu, probability: Zhang Yu (I have only heard of Zhang Yu, and I think the probability is very simple).