Taking Screenshot on Mac is pretty simple. You can take screenshot of entire screen or of a selected portion of your screen.
Taking Screenshot of Entire Screen
Step 1 – Press Shift + Command + 3
Step 2– Your screenshot file is on your desktop
Taking Screenshot of a selected portion.
Step 1– Press Shift + Command + 4
Step 2 – Drag the pointer to select the area to take screenshot for.
Step 3 – When you are done with selection of area, release the mouse or trackpad.
Step 4 – Your screenshot file is on your desktop