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
Press Command (⌘) + Shift + 5 to open the screenshot toolbar (choose screen, window, or recording)
Press Command (⌘) + Shift + 6 to capture the Touch Bar (if available)
Open the screenshot toolbar with Command (⌘) + Shift + 5 and select Record Entire Screen or Record Selected Portion to record video
Find saved screenshots in the Desktop by default (or in your chosen location)