Other Suggested Resources for Calc IV

The best (and the only good) book for actually learning Calc III and IV How to Ace the Rest of Calculus: The Streetwise Guide (ISBN 0-7167-4174-1)
A good book for brushing up Calc I and II CliffsQuickReview Calculus, 2nd edition (ISBN 0-7645-6376-9)
With luck the links on the book titles will take you to Amazon.Com's description of the book for further information.  I'm not pushing anyone to buy anything, nor am I promising Amazon is the only good source, I'm just letting you know about potentially valuable resources.