The Studentenwerk Niederbayern/Oberpfalz is the equivalent of a student union and will help you with general information about studying. You can get information on university catering (Mensa, cafeteria), educational support, social counselling or student housing.
Here are the links for the services:
Albertus-Magnus-Strasse 4 - Studentenhaus
Dieter-Görlitz-Platz 1, F 101