Access by plane:
Berlin operates the newly opened Berlin Brandenburg international aiport (BER ), offering direct flights to 180 destinations in 54 countries. The airport is ca. 30 minutes from the conference venue by public transportation or taxi. Long-distance carriers also offer connecting flights to Berlin via their European hubs, e.g., Frankfurt, Munich, Paris,  Amsterdam, Helsinki, and London.

Access by train:
For travel within Germany nine high speed train routes (ICE ) link Berlin to many destinations.
Berlin’s public transportation authority BVG offers a dense network of subway lines (U-Bahn), rapid transid railways (S-Bahn), street cars (Tram), and bus lines.

With public transport
Please find more information on berlin public transport here.
Here you can find the route map of Berlin.