Press PrtScn to copy the full screen to the clipboard
Press Alt + PrtScn to copy the active window to the clipboard
Press Windows + PrtScn to save a full-screen screenshot to the Pictures > Screenshots folder
Press Windows + Shift + S to open Snipping Tool and select a screen area
Open Snipping Tool and choose a screenshot mode
Use the Snipping Tool delay option if needed
Paste the copied screenshot into Paint, Word, or another app with Ctrl + V
Save the screenshot from the app if it was copied to the clipboard