I'm a Google Developer Expert for Firebase or GDE for short.
My GDE role centers around publishing Firebase-related content. HowToFirebase.com is a series of Medium articles teaching Firebase basics.
Medium is great for discovery, but it puts a paywall up in front of my content, so I no longer publish to Medium.
How To Firebase covers basic Firebase best practices starting in 2016. Most of the articles are older and cover older practices.
Full Stack Firebase is my follow-up that covers the Firebase APIs as of 2018.