What are the main differences of rules between NCAA football and NFL football?

you only need 1 foot in bounds when you catch the ball where nfl you need 2 in college if you have the ball and fall down your down where nfl you can get up and run the hash markers are a lot wider then nfl ones ot rules are different nfl is first to score where ncaa you get another chance i think college kickoffs are more back could be wrong on that and i think some penalties are different