Press Command (⌘) + Shift + 3 to capture the entire screen
Press Command (⌘) + Shift + 4 to select an area to capture
Press Command (⌘) + Shift + 4, then press Spacebar to capture a window
Press Command (⌘) + Shift + 5 to open screenshot controls (capture screen, window, or timed options)
Press Command (⌘) + Control + Shift + 3 to capture the entire screen and copy to clipboard
Press Command (⌘) + Control + Shift + 4 to select an area and copy to clipboard
Press Command (⌘) + Control + Shift + 4, then press Spacebar to capture a window and copy to clipboard