A look at how windows 10 has placed the Shut down, Restart, Sleep, Lock and Sign out options. I personally like the way it is placed, specially considering the confusion that was there with windows 8. Windows 10 appears to be like a better version of windows 7, with features of windows 8 added to it.
ALT+F4 keys and you will be immediately presented with the Shutdown dialog box. Select an option with the arrow keys & press Enter. If you wish, you can also create a shortcut to open Windows Shut Down Dialog Box. To lock your Windows computer using the keyboard shortcut, press the WIN+L key
