The AP Calculus Problem Book contains 2000 problems on all aspects of AP Calculus AB and BC. Also included are Calculus Labs, TI-Calculator Labs, problems on extra topics for use after the AP exam, and answers to many of the problems for guided self-checks. At the end of each chapter is a sample test, mimicking the AP exam. This is the original edition, last updated in 2010, and is available here for free. There is a new, updated second edition (2017) with 1000 more problems and other goodies, available here at TpT as well.