when you start u have to save some farmers cows from raiders and the only way i found you can do it is by doing it alone becuase you dont get anybody to help you fight yet or follow you on adventures until after you finnish off the raiders for the farmer and right after you do that you should be able to get a traviling helper from the famers place after i think you completle i think one more mission go back to the farmer and ther should be a guy in the house you can ask to join your team and he is a traviling buddy.