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 the screenshot toolbar
Press Control + Command (⌘) + Shift + 3 to copy the entire screen to the clipboard
Press Control + Command (⌘) + Shift + 4 to copy a selected area to the clipboard
Press Control + Command (⌘) + Shift + 4, then press Spacebar to copy a window to the clipboard
Press Control + Command (⌘) + Shift + 5 to copy a selection or recording to the clipboard (from the toolbar)