I’m excited about this book and appreciate your work!
One thing that was distracting was the large title font when I tried to view this site in portrait mode on mobile, as some of the letters are cut off. If that could be fixed, it would help ensure people stay engaged and read it.
You could also potentially use an LLM or something like Grammarly to help proofread it (not edit it).
And thanks for the copy suggestions. I am not a native speaker :)