22 pages are of QR codes to outside resources. 24 pages are for other book and paper recommendations with brief descriptions of each. 10 pages are blank for notes. Blank pages at the beginning and end of the book. Blank pages between chapters. Entire pages devoted to sparse diagrams.
The pretty diagrams do not make up for the lack of content. The given advice lacks meaningful context. This would've worked better as a series of blog posts.