While you are not authenticated, you can browse the courses and teachers, but you may not take any action.
On this page you can only switch to the login site or view courses and teachers by clicking on the respective link.
By clicking on the "courses" or "teachers" link, you get an overview of all courses and teachers respectively.
For every course you can see on the survey the title and the lecturer of the course. Moreover you can see on this survey all lessons. However you are not permitted to see, which student is subscribed to that course.