If you have some issues with Google Home or you plan to sell your device you may want to revert its settings to the factory condition. This will erase all your data: settings, preferences and customizations. Here is how to reset your Google Home to the factory defaults.
There is not dedicated reset button on the Google Home. You should use the Mute button instead.
Now you have the factory condition of your Google Home. You may start setting it up or sell to anybody.