How do you snap your computer screen?

Snap with a keyboard

Select the window you want to snap and press the Windows Logo Key + Left Arrow or the Windows Logo Key + Right Arrow to snap the window to the side of the screen where you want it to be. You can also move it to a corner after snapping it.

How do I turn on Windows snap?

Go to the Start menu, find the setting options, then in settings go to the System Settings. When you click on the System Settings then there are many options available. In this list choose multitasking from there. Now when you click on the multitasking option, corresponding to it you have a window for Snap.