For all questions during your stay, you can contact the Erasmus coordinator of the faculty.
In cooperation with the sociology student council, we are currently preparing a buddy-system. Students of Sociology will help you create your timetable, with orientation on campus and in Dortmund.
The Website of the International Office provides a wealth of information to make your arrival and stay in Dortmund as easy as possible: https://international.tu-dortmund.de/incomings/erasmus/nach-der-ankunft/
You can find information regarding life on campus here: https://www.tu-dortmund.de/studierende/campusleben/
On the official site of the city of Dortmund you can find all the information about events and the like: www.dortmund.de