TreslechesWelcome to UKP
Berlin is like London apart from the fact that London Public transport is much expensive compared to Berlin. The public transport is excellent. You could reach almost all comers of Belin around the clock by Pubic transport, and one day Travel card for Zone ABC only cost EUR 7.60 and valid until 03.00 the following day. Literally you could reach any corner within walking distance using public transport even early in the morning. I never use the taxi and I have been travelling even 04.00 to catch the early morning flight and it is safe.
This is my tools to use the public transport and Walking Navigation around Berlin.
Online Official Public Transport.
External Link/Members OnlyAdditional Public Transport Planner Apps: City Mapper, Berlin subway
Offline
PDF file to download. I found this map is very usefull
External Link/Members OnlyAnd save it in you mobile Phone
Do not forget Google Map also with public transport. Plan it when you have the Wifi connection and then mark and save the place.
Also I found the Window Maps (GPS) is very reliable even without internet connection.
Just a piece of advie. Prepare a ten euro banknotes or coin to buy the pubic transport in the ticket machine in the airport. You will notbe able to use your Master/Visa card to buy ticket from the ticket. I found this is very strang for such and international and the great city like Berlin.
Enjoy Berlin