One of the new features available with our new theme is the "drawer" in the upper left hand corner of the screen. The main content for a course is still in the middle of the screen. Various blocks remain on the right column. Click the drawer to open or close it. Your list of courses will show up in that menu
Closing the drawer yields more real estate. If you can't find a link that you might be looking for, be sure the drawer is open. It might be hiding in there. Open and close the drawer to watch the magic happen...