Single and bilayer graphene as well as graphene layers with a variety of twist angles can be prepared with high quality in many labs around the world. In this talk I will discuss the transport physics of extended bilayer graphene sheets, quantum devices including point contacts and dots, correlated many particle states in layers with large twisted angles and superconducting quantum devices for magic twist angles. The large variety of physical phenomena and electronic phases in these materials offers numerous opportunities for novel device architectures, all in an environment consisting entirely of carbon atoms.