As an experienced calculus student who sometimes (or sometimes a LOT of times) needed a nice brief study guide to help iron out some calculus concepts - I found this book to be quite frustrating to use. The night before the big exam, you DO NOT want to be reading about a bunch of weirdos talking about the simplest derivatives and limits. You need to be doing problems, and looking at more examples. This book is a waste of precious study time and I would never tell anyone to buy it unless they need material explained to them in silly story form. I recommend Schuams Calculus or REA's Problem Solvers for Calculus which contain wonderfully brief reviews, no corny filler, and lots of in depth problems with solutions.