1) TU-ID: First step and nearly the most important one: Create your personal TU-ID. This is your digital identity at TU Darmstadt and the key to (almost) everything you plan to do during your studies. You need your TU-ID as early as the orientation week.
2) Set up your TU email address: Your student email address is your central contact address.
3) TUCaN: This is the central organisation system for courses and examinations at TU Darmstadt. You will get to know TUCaN in the OWO. It's best, though, if you set up message forwarding now and download the TUCaN App from your Appstore! The most important features in TUCaN are also explained in form of video-tutorialsvideo-tutorials.
4) Athene Karte: You need this card to pay at the student canteen (Mensa), borrow books, enter the university stadium and much more.
All steps summarized again on the website of the HRZ.
…and this is what you need in terms of technical equipment