The 2012 NFL season officially begins tomorrow at 4 p.m. eastern time. That's when the blockbuster NFL draft trade between the St. Louis Rams and Washington Redskins will become official, and the Denver Broncos can sign Peyton Manning, and then Tim Tebow will be set free to get another gig, and then everything starts up again. In the meantime, here's everything you need to … [Read more...] about 2012 NFL free agency overview, salary cap set at $120,600,000