Nowadays I specialize in the first semester of AP Physics 1 (kinematics, forces, energy, and momentum). I scored a 5 on the now-retired AP Physics B exam, which condensed into one year what AP Physics 1 and 2 now span across two. While I rarely tutor the more advanced units, my background allows me to help students build a strong foundation in core mechanics, which is the largest component of the AP multiple choice and early FRQs.
My go-to resource is Khan Academy's AP Physics 1 course. Other resources:
AP Physics 1 and AP Physics 2 Sample Multiple Choice Questions (official)
AP Physics 1 Course and Exam Description (official). This document includes additional multiple choice sample questions.
Every previous AP Physics 1 free-response question (official), including scoring guidelines, sample responses, and scoring distributions
Every previous AP Physics 2 free-response question (official)