I'm a high school student who is trying to figure out a complete course of self study for each year of high school. Is there a way to self learn grades of math without devoting too much time? For example, I was wondering whether there are suitable textbooks that have detailed explanations and progressive practice problems. This is a complex issue for me as other students at my competetive high school have tutors and the like. Could someone please give a corresponding textbook that could work for self study for each area of high school mathematics such as:
Trigonometry and Analytic Algebra
Other people have been able to skip entire grades of math due to help from tutors and parents. Would it be possible to cover all of geometry and trigonometry in 8 months without going insane and be able to skip a grade?