Our collection of 21 handouts totaling 100+ pages closely follows the USAPhO syllabus and covers the major calculus topics that you would need to use on the exam (and, optionally, the F=ma). For your convenience, we have divided our handouts into 3 separate categories: derivatives, integrals, and differential equations. After reading our detailed handouts, you could also check out our other project, USAAAO Guide, which prepares you —  using calculus — for the Astronomy & Astrophysics Olympiad.