Are Books Necessary to Understand Mathematical Proofs?

[hellbike]

I'm looking for book about making proof.

Is this kind of book even required to understand proofs? Is there some special theory behind proofs, or books about proofs just provide examples, and are more like "math for dummies" ?

I'm not sure if it's proper to use that kind of book, should i figure everything out by myself from books about standard math topics (like calculus) ?

 

[kuahji]

How to Prove It: A Structured Approach by Daniel J. Velleman

or probably a better introduction if you can afford it

Discrete Mathematics with Applications by Susanna S. Epp