Jayson if you really want to understand the grounding electrode system I think you should follow Dana1028s advice.
I participated in that thread that e57 linked to and if you do not have the basics down it may only confuse and discourage you.
We where batting around our own ideas of grounding and bonding and did not necessarily stay within the NEC rules.
Mike Holt's Books are great from what I have seen and it is available here. http://www.electrical-contractor.net/The_Store/Electrical_Theory1.htm
The Soares Book on Grounding is also excellent you can get it on-line, but it should be available at a local large bookstore. http://www.iaei.org/products/books_02soares.htm
Another option is to look at part III of article 250 and ask us specific questions about the grounding electrode system.
We will all be glad to help but you need to focus the question a little more.