You just got a smart speaker as a holiday present. Here's what you need to know.

So you just got a smart speaker as a holiday present. Now what to do with them? You've come to the right place. On command, by saying "Hey Siri," for the HomePod, "Hey Google" for the Nest Audio or "Alexa," on Echo speakers, you can instruct them to play music of your choice, either via a subscription service, or more generically, as part of a themed radio station via the Pandora service. Amazon's speakers play music from Amazon Music, Spotify, Apple Music, Pandora and iHeartRadio, while Apple plays just from Apple Music and Pandora.