The sample container should be your first starting point:
The page displayed in the figure bellow is the Apache Shindig sample container. Its goal is to help you to deploy and test your applications. It is build ontop of the common container client side code.
By default there are no gadgets displayed in the container. You can add a gadget to the container by entering a URL to a gadget definition and pressing "Preload and Add" or by selecting from a list of predefined gadgets and pressing "Add Gadgets" in the manage gadgets section of the container.
There are various sets of predefinied gadgets available to you in the sample common container page. See each individual gadget for details on what it does.