Most effective guide book for Calculus AB AP

Test Preparation AP Test Preparation
1

<p>My teacher is a complete joke and I am hardly learning anything in her class. So I decided to get a guide book to help me understand the important concepts of calculus and how to apply them to problems.
Which prep book has the most problems / clearest explanations / little or no errors / effective in learning Calculus?</p>

<p>Thanks for the inputs</p>

2

<p>I don’t use a guide, because my I think my textbook is pretty good already. However, when I truly don’t understand something I go on Youtube. Youtubers explain things really well, and they’re free! :)</p>