Hi There,
just a few quick links and tips:
www.kayak.com
(just check for flights from BER to MUC) - consider that the airport in Munich is about 40km out of town and you have to take a train.
INTERNET: just step in the next phone shop (Vodafone, O2 (Telefonica), Telekom or even Aldi) and get a SIM Card and some prepaid budget (10-15 Euro / Month). Best way to use the internet on the road.
AUTOBAHN: Just take care... I drive quite a lot for business and people who are just not used to the way of driving are dangerous for all of us.
BAHN: Take the train. The ICE is one of the most comfortable ways of traveling.
Other ways to travel:
-
http://www.mitfahrgelegenheit.de/ (huge carsharing service - works quite good. The system is supported by the ADAC - German AAA)
-
https://www.deinbus.de/ (this service is like your Greyhound Bus. Itīs running for a couple of monts now and a cheaper way of getting aroung)
Overview of some bus companies:
http://www.busticket.de/alle-anbieter