Ummm..well, first thing you need to know that in most cases it is illegal to reverse-engineer software (unless it is open source, of course)..And it's not something you are going to learn just reading a few books or tuts...

What I would do if I were you is search for some "educational only" sites that teach reverse engineering. Something like this: http://www.google.com/search?hl=en&i...=Google+Search

Just remember though, use your knowledge for positive purposes only. Don't get sucked in by the darkside