Press Command (⌘) + Shift + 3 to capture the entire screen
Press Command (⌘) + Shift + 4 to capture a selected area
Press and hold Space after Command (⌘) + Shift + 4 to capture a window (cursor becomes a camera)
Press Command (⌘) + Shift + 5 to open the Screenshot toolbar (screen, window, or selection options, plus recording)
Press Control + Command (⌘) + Shift + 3 to capture the entire screen and copy to the clipboard
Press Control + Command (⌘) + Shift + 4 to capture a selected area and copy to the clipboard
Press Control + Command (⌘) + Shift + 4, then Space to capture a window and copy to the clipboard
Press Control + Command (⌘) + Shift + 5 to record the screen and copy the recording options via the toolbar