Using public transports
From Hauptbahnhof Hannover walk to the subway station Kröpcke (about 500m from the main entrance of the railway).
Take the subway No. 4 (direction Garbsen) or 5 (direction Stöcken) to the station Schneiderberg / Wilhelm-Busch-Museum.
Cross the street and walk along Schneiderberg. After about 600m turn left into the 2nd cross-street Appelstraße. After about 300m you will find TFD on the left side (see city map).
You will find electronic time-table informations here