Due to Potsdam's close proximity to Berlin the most convenient travel route is via Berlin central train station or one of the two Berlin airports. There are frequent and direct connections from Berlin to the conference venue (e.g., S-Bahn S7, see below).
for detailed information on the S-bahn, train and bus times of Berlin and Potsdam. For the Potsdam busses and cable cars additional information can be found here
Arriving by plane:
Both Berlin airports (Berlin TXL or Berlin SXF) can easily be reached from the venue within approximately one hour. From Tegel you can take the bus (Bus 109, Express Bus X9) to Berlin Zoologischer Garten and then either the S-Bahn (S7) or the regional train to the Venue/ Potsdam Main Station.
Here you will find a map of the venue. The closest station is Potsdam Griebnitzsee which can be reached via S-Bahn (S7 runs every 10 Minutes from Berlin and also from Potsdam Main Station) and regional train. Note that Potsdam Main Station is only two train stops away. The station Potsdam Griebnitzsee is within 5 minutes walking distance from the conference venue.