Like the other hundreds of thousands of CrossFitters across the globe, we consult this site every day for information regarding which exercises to employ, instructions on movements, and all other fitness related advice. Beyond that, the site acts as a forum for dialogue that and strengthens the CF Community.
It is also worth noting that essentially everything on CrossFit.com is free of charge. A complete novice can can become an elite athlete with nothing more than the articles and videos on this website and a garage gym- some of the most successful CrossFitters got their start this way. If you'd like to get even more information on the CrossFit methodology, I would suggest getting a subscription to the CrossFit Journal and buying a copy of Starting Strength, a basic lifting handbook.