The Block Editor has been built into WordPress since Dec. 2018. WordPress 5.0 turned Gutenberg into “The Block Editor” and the default way to manage your WordPress content.
New features are being made often to the Gutenberg Plugin and periodially those features are added to core. 5.3 realease Nov. 12, 2019 brought many new additions from the plugin to core.
To keep up with the changes we suggest following The Gutenberg Times
Genesis Theme Authors
Getting your theme ready for Gutenberg
From Godaddy
What WordPress 5.0 means for businesses
About
https://wordpress.org/gutenberg/
Resources and Blogs
https://gettingreadyforgutenberg.com/gutenberg-resources/
Instruction
Premium Course
https://creatorcourses.com/product/gutenberg-introduction/ref/3/
FOR DEVs
Blog Post
A Collection of Gutenberg Conversations, Resources, and Videos