To switch between open application.
To display icons.
To start the computer.
To shut down the computer.
Increasing the number of pixels displayed on the computer screen.
Sorting icon by name on the desktop.
Restoring deleted items from recycle ben.
Changing the background colour on the computer screen.
Devices and Printers
Log off from the computer.
Restart the computer.
Open Task Manager and end the task.
Shut down the computer.
Shut down the computer and then remove the USB memory stick
Remove the USB device click on the USB device icon on the Taskbar, and select Eject USB Desk
Disconnect the cable from the USB port on the computer, remove the USB memory stick
Click on the USB device icon on he Taskbar, and select Eject USB Disk, remove the USB memory stick
Here's an interesting quiz for you.