K-12 CS BOOK – Imagining the Possibilities

Who is Doug Bergman and how is he qualified to even write a book: https://www.youtube.com/watch?v=YaxjWSotoZo

What is the book about? https://www.youtube.com/watch?v=5R4oMNpMgUA

Where can I buy the book?
https://www.amazon.com/Computer-Science-K-12-possibilities-innovative/dp/1986171817

Here is an in-order list of links from the book