Let's face it. Maths textbooks are not published out of the goodness of people's hearts. They're published because most of the people who write them will get fired from their jobs as college professors if they don't publish a textbook every now and then.
This book, however, is an exception. Mike Kelley, best-selling author of 'The Complete Idiot's Guide to Calculus', has taken what appears to be a typical calculus workbook, chock full of solved calculus problems, and made notes in the margins adding missing steps and simplifying concepts and solutions so that what could be baffling to students is made perfectly clear. It's as if your best friend -- who just happens to be a calculus whiz and who's painfully aware of your mathematical shortcomings -- got a hold of your calculus workbook and went bananas with his ink pen, illuminating everything you find confusing! He was even kind enough to write legible! No longer will befuddled students cry out in frustration: "Where the %#*! did that number come from?" or "Did they skip steps in this answers or am I just dumb?"