Are you actually wanting to compete? I wouldn't recommend using a book, you'll only teach yourself bad habits that WILL become very, very difficult to shake once you start training with a coach.
Championship Fighting by Jack Dempsey from 1950. you can download it in PDF somewhere on internet.. try with some websites like www.expertboxing.com - to me one of the best sites for tehnic and watch videos, they can better explain proper movement than books.
Edwin L. Haislet wrote, in 1940, the very best book on boxing fundamentals that I am aware of. I think that, were you to follow that book exactly as it is written, you would be less likely to pick up bad habits than in just about any gym that I've been in. Teaching fundamentals, and boxing skill in general, is not a priority in this era. In the 1950s there were tons of "How To..." boxing books produced because many universities (in the US) still had boxing programs. Almost without fail they are better than more recent books, at least the ones that I have seen. As to the Dempsey book being outdated, let me ask...Have the fundamentals of punching technique been changed? Footwork? Slipping, blocking, or parrying punches?
A little pointer - how things 'feel' and how they are percieved to be performed are two very different things.
I'm a fan of The Ultimate Boxer [ame="http://www.amazon.com/Ultimate-Boxer-Understanding-Skills-Boxing/dp/0963096850"]'the ultimate boxer' [/ame] Practical guide to starting amatuer boxing, Fundamentals, Conditioning, Science, Strategy, Competition, Social aspects, Coaching. it should have answers for most of the basic questions in boxing. The author knows her ****, ex coach for the US Olympic team
What are some good videos you recommend? I watched this Freddy Roach one on youtube but it was only 40mins and wasn't too in depth.