Screenshot on Mac
Press Shift button + Command (⌘) + 3(#)
To take a screenshot on Mac you have to use this method, this will take a screenshot of the whole screen.
How to take screenshot of selected portion of screen?
Press Shift + Command(⌘) + 4($)
Move the crosshair to where you want to start the screenshot, then drag to select that area you want to capture, while dragging you have to hold the shift, option or spacebar to change the way of selection moves.
now if you select the area to capture, release you mouse or trackpad, you will find out the captured screenshot on desktop. to cancel click ESC.
How do I take a screenshot of the Touch Bar?
Press shift + command(⌘) + 6(^)
Mac will capture the entire touch bar and save it to deskop.
Read about best screen recorders.