How to Take a Screenshot of Your Desktop Mac
Being able to take a screenshot of your computer's desktop gives you the ability to capture what is happening on your computer screen at any given time. If you are a Mac user, the device's preassigned hotkeys make taking a screenshot simple, allowing you to take a screenshot of your Mac computer's desktop by pressing a simple keyboard combination in a few simple steps.
Press and hold the "Apple" or "Command" key on the computer's keyboard.
Press and hold the "Shift" key on the computer's keyboard while still holding the "Apple" or "Command" key.
Press the "3" key on the keyboard while still holding the "Shift" and "Apple" or "Command" keys. Upon pressing the "3" key, a screenshot of the computer's desktop is saved onto the computer's desktop.