Here are my review sheets for AP Calculus BC, which also naturally includes AP Calculus AB.
The following are past AP Calculus BC and AB exams. It’s a compilation of old material split into the multiple choice and free response questions (FRQs). They are property of Collegeboard and the the respective website owners.
Link to 1988 and 1998 AP Calc AB Exams and Answer Keys:
The following notes are not created by me, but I think you might find them helpful if you’re in need of them. They are made by Paul Dawkins of “Paul’s Online Math Notes,” and they are of stellar quality. You can download the PDF for the entire course here: