He is a former English professor who has been living in secrecy to avoid the oppressive government that has banned books. He uses his vast knowledge of literature and history to guide Montag in his journey of awakening and rebellion.
Faber lives in a hidden location, likely a secluded apartment or house, which he uses as his base to communicate with Montag and other potential rebels. His nomadic lifestyle reflects his fear of being caught and his dedication to preserving knowledge.