Some desktop browsers and mobile browsers may automatically hide the course menu area to make more space for the content area.
To show the Course menu (in your desktop browser), simply hover your mouse over left side of the browser window. You should see a tab with a right-arrow. Click on the tab or the window edge (highlighted in blue) to expose the Course Menu.
For mobile users, click on the left window edge (highlighted in blue) to open the Course Menu area.