If you're traveling with more than 1 person, buy the group metro ticket at the airport to save money. This gives up to 5 people access to public transportation for the whole day.
Munich is more than just Oktoberfest and Bavarian culture (though, those are cool too). It's quickly becoming Germany's hottest destination for art. Galleries like SPERLING and Deborah Schamoni are the places to go for cutting-edge contemporary art exhibitions in this medieval city.