Press Command (⌘) + Shift + 3 to capture the entire screen
Press Command (⌘) + Shift + 4 to capture a selected area
Press Command (⌘) + Shift + 4, then press and hold the Spacebar to capture a window (cursor becomes a camera)
Press Command (⌘) + Shift + 5 to open the screenshot toolbar (choose screen, window, or selection; set options)
Press Control + Command (⌘) + Shift + 3 to capture the entire screen and copy it to the clipboard
Press Control + Command (⌘) + Shift + 4 to capture a selected area and copy it to the clipboard
Press Control + Command (⌘) + Shift + 4, then press and hold Spacebar to capture a window and copy it to the clipboard
Press Control + Command (⌘) + Shift + 5 to record video (screen or selected portion) and copy/save based on toolbar options