Hi Ehramae, just click on the category. Then a new page showing the courses comes up. Click on the course that interest you, then the course description page appears. At the end of a page is a link to the main course material, click that and you'll have a page asking you to enter the enrollment key in the box. The enrollment key is given to you via text or right here when you ask for it. Welcome to the site and hope to see you too in one of the graduations