How to Play Fantasy Football Fantasy Football For Dummies Fantasy football lets you try your skills as a fantasy owner. After you join a league, you scout for and draft players, compete against other fantasy owners, and use all your skills to win the championship. Learning how to play fantasy football is easy; conquering your competitors and becoming a champion is a different story. Fantasy Football 101: Here’s what happens in a fantasy football season. You join a league. You can join a public league, where anyone can sign up for a spot, or a private league, where you need an invitation to play.