Which book should I use to help me learn Calculus on my own?

I am an immensely motivated high school student that is seeking a route to learn Calculus or at least grasp a basic concept of what would be covered in the AB AP Calculus course. I will be taking the class in a year but just want to adequately prepare myself. I was wondering if anyone could suggest a comprehensive, easier to grasp (Calculus is Calculus), book to read that would also present practice problems to do. I have heard that "Calculus for Dummies" and "Calculus Made Easy" are two exquisite books for this process. Opinions on these books and suggestions for any more would be much appreciated. I am not necessarily looking for a text book because of the price. Thanks.