To access and take a Course, as a Learner, you have to add it to the roster first. After logging in, go to 'My Courses' page and click on the 'Course Catalog' button (1).
In the 'Course Catalog' page, hover your mouse over the Course icon (located above the Course title) and click on the 'Info' button (2).
Click on 'Add to Roster' (3) to complete the action.
A Course enrollment confirmation window appears, and you’re presented with two options, either 'Continue browsing the catalog' (4) or 'Go to course' (5).
Pick the first option to return to the 'Course Catalog' page. To start taking the Course you've just added, pick the second option and, in the Course page, click on 'Start Course' (6).
Note: The steps above apply to free Courses. When a Course needs to be purchased, you have to add it to your shopping cart, check out and complete your payment before you start taking it.