The Start Button in Windows 8.1: Video
This video shows you how to use the Start button in Windows 8.1.
The Start Button in Windows 8.1: Overview
The Start button in Windows 8.1 is a small button that displays the Windows logo. If you hover over that corner in the Start screen, it appears in the lower-left corner of the screen. It always appears at the left end of the Taskbar at the bottom of the Desktop app.
You can click the Start button to display the Start screen within Windows 8.1. You can right-click the Start button to display a pop-up menu of shortcuts to various windows and control panels that you may want to access on your computer. To open any one of these windows, simply click the desired command in the pop-up menu that appears. A handy shortcut is the “Shut down or sign out” command. If you roll your mouse pointer over this command you will see the options that you have to shut down or sign out of your computer shown in a side menu that appears. You can then select the desired command to execute in the side menu to quickly sign out of your account or shut down the computer.