Thanks. I’m glad you’re enjoying it. I could expand that section. My style was quite minimalist when I worked on the earlier chapters over a year ago, so I might review and rewrite some of the text.
I guess I’ll stick with my guns for now. 
You should be able to use this link. This was what I used for personal testing, and it should have the latest files now. It’s set to private, so you’ll need to use the link for access (i.e. it won’t show up on the public games list). Code-sharing is enabled.