A shortcut for the Instagram website, or a shortcut for the Instagram app? To create a shortcut to a web page from inside Firefox: * long press the address bar until a short menu appears * tap Add Page Shortcut (I think this used to say Add to Home Screen) This generally goes to your last home screen, so if you want it somewhere else, you'll need to move it after that. For the Instagram app (not through Firefox), you'll need to use the method for your version of Android (whatever that may be).