Google Home is a fantastic device that focuses around the playback of music. Yet, unlike the MP3 players of a previous age, it has no storage capability of it's own (such as microSD or SD card slot). Instead, Google Home is designed to access all music either from the cloud or from another device via chromecast (but not Bluetooth audio).
Google Home supports several streaming music services including support for Spotify Premium, Pandora, TuneIn, and Google Play Music. But what about the music you already own on your computer in MP3 format? Maybe you don't subscribe to a premium streaming service because you already own a lot of your own music in the form of MP3 files on your computer hard drive. Read More >>> about How To Listen to Your Own MP3 Music on Google Home