SEC (South Eastern Conference) is where Alabama, Auburn, Florida, Georgia, South Carolina, LSU etc. play. Considered the toughest division in college football for a long time.
Pac 12 is where USC, Oregon, Stanford, AZ State, Cal, UCLA, etc. play.
Big 10 (has 14 teams now lol) is where Michigan, Ohio State, Michigan State etc. play
Big 12 (has 10 teams now lol) is where Texas, Oklahoma, Kansas, Baylor etc. play.
ACC is where Florida State, Miami, Clemson etc. play
most of the other conferences don't matter