I have an embarrassing amount of Calculus books. My dad taught the subject in a high school and community college; I suppose I have a soft spot for it. "Calculus Made Easy" is a good book though I do think there are better ones these days. Some of the lexicon has changed and there are topics covered in a modern Calculus textbook that aren't covered in the original book (that I personally think are worthwhile spending time on). The updated version with Martin Gardner does have blurbs where necessary to point it out. The Kline book is a MUCH larger read, but is what I would recommend if you want a reasonably priced Calculus book that's easy to grok. Otherwise, I think it's hard to go wrong w/ the Stewart books. Work through the problems as they do in the book, you will come away w/ what you need. Finally, if you want a whirlwind tour, Calculus for Dummies by Mark Ryan is great.

Time spent learning Calculus is worthwhile; and if nothing else, understand the fundamental theorem. Overwhelmingly impressive.