Friday Night Magic (FNM) is a recurring, in-store event designed to bring together your community for fun Magic play. The idea of FNM is simple: on any given Friday, players of any skill level know they can find friends, fun, and battles weekly at your store.
The format of FNM is up to you: pick what your community enjoys and works well for your store; run as many events as you need, in whichever formats your players prefer.