1) If you are planning to come by train, take the U1, U2 or U3 to U-Gleisdreieck Station.
2) Exit the station (don't worry, this station has only one exit).
3) Walk left and go left again and you will see the very straight street on your left hand side. Go down the road. You will already see signs on the fences with arrows to the location B-Part.
4) Pass by the BRLO Brewhouse (Black Container) and continue walking.
5) You will see a big all-wooden building to your right.
6) Enter through the metal fence gate and walk around the building, as the entrance is on the other side.
BVG is the public transport provider. They offer an extensive S-Bahn (underground), Straßenbahn (tram) & bus network. You can easily buy ad hoc tickets at every station or on your mobile via the BVG app, you can buy a monthly ticket for 81 EUR. Zone AB should be enough to take you around the city.