Location
It does not matter on which means of transport you will reach Berlin. Berlin-Buch is well connected with the public transportation system and in any aspect easily accessible.
Arrival by plane and car
www.berliner-flughaefen.de
current information and flight schedules of the Berlin airports
http://auto.abacho.de/routenplaner/
selection of online-route-planners
Arrival on bus and train
www.bvg.de
information on means of public transportation in the Berlin area
www.bahn.de
information about services and connections of the German commuter rail