What if I just open my text book and start reading into DNS? I mean it's a college text book, so I am thinking it will not be indexed online.. If it was students would just look it up instead of dishing out $100+ for the book. OR just read the information but in my own words. One book could provide me with months and maybe even years of content. I studied exercise science so most of them are about nutrition, weight training, energy systems of the body, anatomy, etc. Pretty hot topics IMO. Just an idea, whadda ya think..?