Hi Andy,
I believe these are the two plugins you are looking for:
– https://github.com/zgordon/gutenberg-course
– https://github.com/zgordon/how-to-gutenberg-plugin
I am not sure what you mean by “upload to your text editor”
These plugins should be installed on a WordPress site and then you open whichever plugin you are working with in your code editor from the wp-content/plugins/ directory.
Hope that helps!