How to Toggle Within and Between Apps in OS X

  • Toggling between open programs is Command + Tab
  • Toggling up a minimized program is Command + Tab with Option on release
  • Toggling between tabs is Command + Shift + [ or ]
  • Opening a new tab is Command + t
  • Closing a tab or window is Command + w
  • Toggling windows of the same application is Command + (next to shift in english keyboard)

source :–mac-56503

Taking screenshot of selected area on the screen to desktop: Command + Shift + 4