You can easily select a wallpaper from a collection of a few in your system and set it as wallpaper for your Home screens. Touch and hold an empty location of a home screen. Choose either Gallery, Live Wallpapers or Wallpapers from the pop-up menu. Select an image and set it as wallpaper. Alternatively, you can run the Settings app, then go to DEVICE > Display > Wallpaper, and continue with the step 2 above.