Here is a great resource to the CAGED system. This guys name is Desi Serna and he has a great DVD on the CAGED system. He also has a book which is an excellent resource! The fretboard theory book breaks the CAGED system down in detail and the best thing is that he references everything to songs so that you can apply the CAGED system and understand how to use them. Here is his link and I hope it helps!!

Shannon

http://Guitar-Music-Theory.com