Exit the Application by using the Exit button, which is located in the upper right-hand corner of the screen. Note that you should always close the Application with the Exit button, not with the red 'X' in the topmost corner. Also, you should always exit the Application before you shut down the computer.
To shut down the computer, click the Start button in the bottom left-hand corner to open the Start menu. Click the Turn Off Computer button. The computer will shut down automatically through a process that may take up to 1 minute.