This is main railway station of Potsdam. It took you really close the the center city, there couple…read moretrains from or to Berlin will pass by here. Usually it's about 30 mins in between.
The station itself beside trains station, it's also a super mall. You could find a lot different shops and restaurants here, even like Media Markt you also could find it here. It's really convenient. If you have to wait for your train, then you just hang around and do some shopping.
In front of the station, there are tram stations and bus stations. There are so many different line here that allow you to travel with it all around the city Potsdam. If you already have the area C of Berlin ticket, the you don't have to buy other ticket here, but remember to check your ticket is that only one direction and couple times. If you got only one time, then you got to buy a new ticket when next time you take any public transportations again. I found the system quite fair though.
From the railway station to the city center of Potsdam usually took around 4-5 mins by public transportations. If you come here to visit, that's actually save a lot time. So you could start at the city center, explore all the famous sightseeings here. Don't miss the beautiful Sanssouci castle and garden. And Potsdam itself is a very beautiful city as well.
At the end, personally I like this station a lot, quite well-organized and clean. There are information stand and free map for people who needs help. And definitely it won't to be bored, even I have to wait here. Instead of just siting here, I could go to do some shopping or just check out some new books in the book shop. Fantastic!