Getting to know your Nexus 7
1. Proximity/Light/Gesture sensor.
2. Front camera.
3. Opened apps
• Touch to open the list of currently opened apps.
4. Home
• Touch to return to the Home screen.
• Touch and hold to launch Google Now.
5. Back
• Touch to return to the previous screen.
6. Volume buttons
• Press to adjust the device volume.
7. Power button
• Press and hold to turn the device on or off.
• Press to turn on or lock the screen.
8. Charging/USB port.
9. Headphone port.
10. Rear camera.
11. Speakers.