You can download additional wallpapers on Google Play.
3. To set a wallpaper, touch Set wallpaper or, for Gallery images,
determine the cropping and touch Crop.
To change your tablet's wallpaper, go to Settings >
Device > Display > Wallpaper.
Take a screenshot
You can easily take a screenshot on your tablet that you can save
in your Gallery or share with others:
1. Make sure the image you want to capture is displayed on the
2. Press the Power and Volume down buttons simultaneously.
The screenshot is automatically saved in your Gallery.
TIP: To easily share your screenshot via Gmail, Google+,
and more, swipe down the notification shade and touch the
Share icon next to the preview of your screenshot.
Connect to keyboards, mice, & other devices
You can connect a keyboard, mouse, or even a joystick or other
input device to your tablet via USB or Bluetooth and use it just as
you would with a PC.
NEXUS 7 GUIDEBOOK
EXPLORE YOUR TABLET