I'm taking multi-var calculus next semester and I found out that we are using this terrible excuse for a book: https://www.amazon.com/Calculus-Mul...1586/ref=sr_1_1?ie=UTF8&qid=1324521500&sr=8-1 Anyway, I have been studying ahead using my huge copy of Stuart, which my university uses for Calc I and II. I asked my professor why we use this new book for Calc III, and he said it had something to do with money basically, but also, James Stuart's book is a little weak for calculus III. If Stuart is poor, and this book is horrible, what is a good book I can use to study Calculus III? I'm just going to ask a fellow student if I can copy the problems out of his book and forgo purchasing the required book. Is Stuart a reasonable Calc III book? I partially hope so, it would save me a ton of money. My Differential Equations class also uses a silly poor-ranking book that was picked by my school for some unknown ($) reason. What's a good alternative to that?