To register for modules or module exams at Freie Universität, you can use the online Campus Management system. You need a valid zedat account to log in to the Campus Management homepage and navigate through the module registration process. It's important to read through the general information on the Campus Management system carefully and use the quick reference guide and video tutorial as needed. The registration period for courses is always announced on the general website, along with relevant orientation events. If you have any questions about the Campus Management system, you can contact the info service as explained in the support tab.