The menu can be found along the left side of the screen. Clicking on a menu item will either expand a drop-down menu, as shown in the figures below, or display the menu item's corresponding screen.

The content in the main window will change to correspond with the menu item that you selected.

The breadcrumb feature will then be visible at the top of most pages, as shown in the figure below. With it, you can see where you are in the application hierarchy. 

You can also click on any of the items in the path to navigate immediately to the desired page.