At the top and bottom of your screen are panels, which can hold menus, program launchers, and a wealth of other features. By default, the layout of the top panel is as follows. In the top-left corner lie the Applications menu, which allows you to run a variety of programs and change some settings, and the Actions menu, which allows you to search for documents and log out, among other things. Please keep in mind that the CSL does not fully support all of the software available to users.
To the right of these menus are program launchers, which will launch the standard CSL supported web browser, email client, and office software when clicked. The upper-right corner contains a clock and volume control icon.
The bottom panel maintains a list of currently running program windows. Clicking on any given entry in the list will bring the respective window and program to the front of the desktop and make it the focus of the window manager. There is also a button in the lower-left corner that will hide or restore all windows when clicked.
In the lower-right corner of the bottom panel is the Workspace Switcher. This powerful tool allows you to have windows on multiple virtual desktops and switch between said desktops. For instance, you could have a web browser on desktop 1, an email client on desktop 2, your programming projects on desktop 3, and other random programs on desktop 4. Simply click on the small desktops in the switcher to change between them. You can even change a window's desktop by dragging it between the screens with the left mouse button.