On a Mac:
Want to take a quick picture of your desktop:
COMMAND KEY + SHIFT + 3
Want to take a picture of a specific section of your desktop:
COMMAND KEY + SHIFT + 4
(A cross hair will appear as your mouse pointer, then highlight your selection.)
These are great for making screenshots for websites and the .png files are saved right to your desktop.
Press your PrintScreen/PrtSrn button (normally located at the top right of your keyboard).
It copies an image of your screen onto the “clipboard” ready to paste into any graphics program or even into a Microsoft Office document (you will want to crop the image).
“Aim for the Useful”