What is good reading material for fitness and diet?

I’m looking to become a health nut. I’d like to know what the proper reading material is for the straightforward science of diet and fitness. There’s so much reading material, I don’t know where to begin.

How can I prepare academically for Navy Diver School?

Your probably saying… "Well he should be worried about his physical shape" or something of that matter… My PST was this:
500yd swim = 8:45, Pushups = 100, Situps = 110, Pullups = 14, and I did the 1/5 mile run in 9:30.. I am still training(CrossFit!!!!) to improve and am already signed and classed as a Diver. I don’t leave for 6 months.
I was wondering if any1 knew of any reading material that I should go over. I understand all the basic gas laws.. But in general I just don’t want to stop preparing… Any other information would be great… What I could expect to make coming out of school?(not that important to me though), The daily life and work ethic? How many dives a week? Enjoyment?(I love the water, I live in it!)…. Any answers and info would be great or if some1 could refer me to a Dive motivator or a Former navy diver that would be just peachy…. Thanks a lot in advance and please no crap answers copied and pasted or one line or immature… Intelligent, legit answers from Good personal sources… I have read everything I possibly could online. Thanks again!!!!
I meant 1 1/2 mile run! Sorry