There is a lot of support available to help you settle into your studies including from Faculty / Department, the University's central services and intercultural mentoring programme.
Faculty/Department predominantly provides the information and support you need to settle into your studies. Visit website of your Faculty to review the information prepared for new students and to see what is expected from you in the first few weeks.
By signing up for the intercultural mentoring programme (iMent) you will get the first-hand support during your first semester from a student in a higher semester. He/she will be your mentor and support you with organizing your studies, making new contacts, learning German and exploring the region.