Bill Williams runs this association that gives its members access to over 3,500 coaching clinics on all topics.
Russ Farley has a put together a comprehensive list of Football books threw the ages.
John Merit has put together a Comprehensive view of the West Coast Offense
Chris Brown's No Huddle Spread Site
Coach Sisco's Spread Site
HS Football Game Tape Trade Site
Joel has put together a website where people can exchange High School Game Tapes.
He has a vast collection from over 25 States