The Basics 25
Customizing the Home Screen
You can add the following types of items to the Home screen:
Shortcuts Add shortcuts to applications, a bookmarked webpage, a favorite contact, a destination in Google Maps, a Gmail label, a music playlist, and more. The shortcuts available depend on the applications you have installed.
Widgets Add any of a variety of widget applications to your Home screen, including a clock, a music player, a picture frame, Google search bar, a power manager, a calendar of upcoming appointments, a News and Weather widget, and more. Note that more widgets can also be found on Android MarketTM.
Folders Add a folder where you can organize other Home screen shortcuts and icons, or folders that contain all your contacts, contacts with phone numbers, or starred contacts. Your folders' contents are kept up to date automatically.
To change the Home screen wallpaper
▶From the Home screen, press the Menu Key 
and touch Wallpaper.
You can also touch and hold an empty spot on the Home screen, then touch Wallpapers in the menu that opens.
