How do I add widgets on Android 4.0?
Widgets are a feature of an application that you may install that allows you to place a function of that app onto your Home Screen. For instance, you may add an Analog clock to your Home Screen.
To add a widget, simply tap the app panel (six squares) in the upper right of your home screen, and select Widgets from top. From there, select any of the available widgets and long press and drag to where you want it on your home screen.