While getting to know the interface elements or when sampling new tricks of the trade, you may find it helpful to create a dummy Site simply for research and development. This way you can experiment fearlessly, pulling assorted objects onto the page and manipulating them without any serious repercussions. Check out the Inspector in all her various disguises, note how the Toolbar changes in different situations, and view your pages in other layouts. Natural curiosity and hands-on exploration go a long way when it comes to mastering an application.