Summarize this article in one sentence.
Move your cursor to the bottom-right or top-right corner of your display until you see the side Charms bar appear. If you are using a touchscreen device, swipe to the left from the right edge of your screen. This will open a larger Settings sidebar. A list of options will appear. Any programs that you have open will attempt to close automatically. Occasionally, programs may prevent Windows from shutting down properly. Windows will attempt to force close these programs, or you may have to close them yourself.

Summary:
Open the Charms bar. Select the Settings option at the bottom right of the bar. Click or tap the Power button. Select “Shut down”. Wait for your computer to turn off.