I’m 99.9% sure that’s called tuition
Answer:
No
Explanation: It is not essential. Scoring well on an AP exam requires studying, yes, but not memorization of a book. Instead, focus on understanding the concepts overall and studying key points of each unit. What book you use for that is not essential, as long as it is decently up to date.
Including the good and bad of yourself would be the most honest. Like I'm not the best at math but, I try my best, finish my work and ask for help when I need it. I don't know if this is the kind of answer you're looking for.