1. Screenshot of the entire screen: Hold down "Command" + "Shift" and press "3" on the keyboard. The file will be saved automatically on the desktop and will have the name like “Screen shot 2016-11-11 at 01.45.00 PM.png”.
2. Screenshot of the selected area: Hold down "Command" + "Shift" and press "4" on the keyboard, then use your mouse to rectangle and capture the area you need.
3. Press Shift-Command-4. The pointer changes to a crosshair. Press the Space bar. The pointer changes to a camera. Move the camera over a window to highlight it. Click your mouse or trackpad. To cancel, press the Esc (Escape) key before you click.Find the screenshot as a .png file on your desktop.
