Tommy Leung at Ourcade has recently started publishing a number of high-quality Phaser tutorials, of which this is the first part in an on-going series: "Games can be some of the most complicated types of software you can create. And the most fun.
It helps to use modern best practices to avoid messy bugs or more easily fix ones that come up.
Doing so saves you time and headaches. Most importantly it will help you make a better game.
We'll be creating the same game from the official Making your first Phaser 3 game guide. This way you can compare and contrast the differences."