Phaser 3 + Firebase

Hello everyone!
I’m very new to Phaser 3 and JavaScript :hatching_chick:.
I’ve finish my first RPG (yay! :tada:) .
I’ve published it on Firebase, now I want to build a login system and save the player data also with Firebase.
I’m just a beginner and terrible digging through documentation, everywhere there’s a road block.
Does any of you knows about a tutorial, (free or payed) that teaches you how to implement a login system, save the players stats (level, experience, strength, etc) for each new registered gamer with Firebase and Phaser3?

Much Obliged! :pray: