Press Command (⌘) + Shift + 4 to select an area to capture
Drag to select the area, then release to take the screenshot
Press Command (⌘) + Shift + 4, then press Space to capture a window; click the window to capture it
Press Command (⌘) + Shift + 5 to open the screenshot toolbar
Use the toolbar to choose Screen, Window, or Selection capture
Press Control + Command (⌘) + Shift + 4 to copy the selected area to the clipboard
Press Control + Command (⌘) + Shift + 3 to copy the entire screen to the clipboard
Press Control + Command (⌘) + Shift + 4, then Space to copy a window capture to the clipboard; click the window