Not sure what you mean by “its guide”, but I’m guessing you have other Sonos devices that it’s not showing up with? If that’s the case, factory reset it, and connect to your other devices as you normally do. Then use the “add a device” function in the controller and follow those instructions. That will add the Sonos One to the rest of your Sonos devices. 

If this is your only Sonos device, you probably should follow the advice in:

https://support.sonos.com/s/article/4819?