1. Introduction -- 2. Theory of electronic states and transport in graphene / Tsuneya Ando -- 3. Experimental approaches to graphene electron transport for device applications / Akinobu Kanda -- 4. Electronic properties of nanographene / Katsunori Wakabayashi -- 5. Spin structure of polycyclic aromatic hydrocarbons / Akihito Konishi and Takashi Kubo -- 6. Experimental approach to electronic and magnetic properties of nanographene / Toshiaki Enoki.