Welcome back! We’ve just taken a look at what Gutenberg is and how it operates from the admin side. Gutenberg is certainly going to have a massive impact on the WordPress world. If you are just arriving here and have no idea what we’re talking about, I recommend at least skimming Part 1 to make sure you have the appropriate background.
Let’s create a custom block with a bit of help from a wonderful tool called create-guten-block. Onward!