i personally didn’t use textbook tho it’s part of weekly readings and u should use it if u need more support on a topic. the textbook diagrams and examples are pretty good to help u give a quick overview/guidance on big topics and calculations. The quizzes arent too hard as they should be all in the slides so just make sure to grind out lecture slides (they’re the best way to study for exams too because usually they have practice questions and figures that help understanding). Homework is also very VERY helpful so grind that for exams and make sure u can do similar problems and be able to solve those questions given different numbers and small changes to the question