Public transportation in Munich
Munich has a suburban railway(S-Bahn) system and a subway(U-Bahn) system. You can reach nearly most places of interest for tourists in inner downtown and the outskirts of downtown by those systems.
The trains run frequently during peak times, and even at off peak times there is a train around every 10-15 minutes. It looked that Munich had a convenient public transportation system but actually it was really hard for non-German speaking tourists to use a ticket vending machine. A ticket vending machine for short-distance trains, which were always used trains for tourists. It wasn't easy to understand German information written on this machine!

As you can see, all the information was written in German. There are four zones that make up the S-Bahn system and U-Bahn system, in the inner Munich City and you have to pay based on your distance of travel. It wasn't easy to understand which ticket I needed at the beginning.
For your information, Einzelfahrkarte means "a single ticket", Kurzstrecke means "short-distance", Tageskarte means "One day ticket". If you don't learn certain German words related to it in advance, I think that to use the machine well would be a tough job! By the way, a single ticket costs about 2 euro.

This blue box is a stamp machine called "Entwerter", as an automatic ticket gate in Japan. There isn't any ticket gate in Germany so before getting on a train you have to stamp the date with the stamp machine by yourself. If you forget to do it and get on a train, it would be fare cheating! When you get caught for fare cheating on a train, you need to pay a penalty charge on the spot!

Date-stamped tickets
Tickets saying "Hier ENTWERTEN". "Hier" means "Here" and "ENTWERTEN" means "debase". If you're not careful, you also need to pay a penalty charge!