The book is available in Kindle format here:
The book contains some novel ideas abut how spiral galaxies come into being. It quotes extensively from the scientific literature to show that it is based on sound, well-accepted principles. Where possible it has links to publicly available copies of the research papers. Of course it extrapolates beyond the realm of proven fact, otherwise it would be a boring text book. And of course these extrapolations can be challenged by others, who may see flaws in them, or better explanations for the underlying phenomena. This is the way of science.
So fire away, your contributions are welcome. If you happen to ask a particularly difficult question then I will let my chauffeur answer it for me: