1. From the home screen, tap the Google search field.
   
2. First time users may see a brief "Google Now" tutorial. Tap GET STARTED, and complete the setup.
   
3. Tap the Microphone icon or say 'Ok Google' to use voice command.
   
4. Speak the desired command or search.
   
5. To access voice control settings, tap the Search Tab.
   
6. Tap Settings.
   
7. Edit settings as desired.