espn.com did a lot of preview s***; you could read that or buy a preview magazine from the newsstand (ie: sporting news, street & smith's), also watch College Gameday as other people suggested, and also watch a s***load of games.
I watched the UNLV game last night, their QB, Nantkes was really impressive, as was their freakishly tall tight end Estandia (6'8", blocked a field goal and caught two TD's), plus their defense is really fast. They might not be as bad as I figured them for, but then again Toledo isn't the greatest team out there.