Press Command + Shift + 3 to capture the entire screen
Press Command + Shift + 4 to capture a selected area
Press Command + Shift + 4, then press Spacebar, to capture a specific window
Press Command + Shift + 5 to open screenshot and screen recording options
Press Command + Shift + 6 to capture the Touch Bar on supported Macs
Hold Control while taking a screenshot to copy it to the clipboard instead of saving it
Find saved screenshots on the desktop by default