Like all the other factions Minuteman have their main story quests, Radiant quests (randomly appearing quests that, after you do enough of them, start to repeat) to help settlements and that way recruit them (make them available as your settlement) and random repeatable quests that task you with helping a settlement you already own. Afterwards, all your dealings with the faction will go through Preston Garvey.
You get to join the Minuteman at the very beginning of the game, while you do the first few quests in Concord. Such is the nature of this guide that it WILL CONTAIN MAJOR SPOILERS. We’ll also cover how to stay friendly with other factions for as long as possible. If you are wondering how to stay in good standing with the Minuteman and complete all main quests for this faction, this is the guide for you. There are some instances in other factions’ questlines where you might become enemies with the Minuteman, but we’ll cover how to avoid that in this guide. Unlike with other factions, Minutemen do not require you to become enemies with others until the very end, so you can progress their story without locking yourself out of other faction stories.
Minutemen are one of the main factions in Fallout 4 and following their storyline will lead you to a “unique” ending.