That's what the Newbie/ Trainer's Manual Mafia is for. If you go to the game forum, one of the first topics should be a guide to mafia. I learned the game in real life. In the most basic version, there is a narrator, doctor, cop, and killer (the mafia). Everyone else is the town people. Everyone "goes to sleep" and the narrator has each role (doctor, cop, killer) wake up one by one and tell him who they want to save/ kill/ arrest. After the night, the narrator tells a story about someone's death and there is a trial. The forum version can be more complicated than that but it comes down to an uninformed majority (good) trying to get rid of the informed minority (bad).