do the problems in the back and read the textbook tbh.

Depends on which class of this teacher you are taking. But no matter what it is, study. Practice. Review. I could say it a thousand ways, but this teacher's goal is to make you have a harder time than you expect, and it does you a lot more good than you'd think. The things I've learned in his BC and Precalc classes will stay with me for a long time. You must do all the problems in the homework as well as some of the problems in the back honestly and with dedication. With that, this class becomes much more manageable. Whatever happens, don't hate the teacher for it. He's only there to make you as good as possible. If you think math is not for you, you're wrong. Anyone can do math if you've got the motivation. So, if it interests you and you want a challenge, go for it. You'll have an experience and you'll have memories; whether good or bad, that is up to you.

Study way more than you think you need to. Do a lot of book problems.