Above the Main Course Menu, you have a series of icons (the background color will vary depending on your theme):
The plus sign on the left lets you add Course Content items.
The file-folder stack (circled below) will display your Course Menu in a new window.
Floating below the Blackboard header (right above the Main Course Menu icons), you will see another toolbar. Where the images say “Home Page” will be the breadcrumb indicating which page (and subpage) you are currently on.
If you click on the little house (see below), it will load your Home Page in the main frame:
If you click on the drop down arrow (circled below), you’ll get a “Recently Visited” list as well as your courses: