Usually, the Fachschaftsvertretung (student body representatives) love to introduce all first semesters into university life. Sadly, it looks like the tours through Würzburgs educational and pub landscape will be canceled this summer. That's why we are working on a online survival guide to help you to get through your freshman struggles.
For international students, the international office usually provides good information. If you run into any problems, you should go find your Fachschaftsvertretung - they'll love to help you and know all the little tricks for your field or degree. (They are usually called "Fachschaft" or "Fachschaftsini"/FSI + faculty or field).