I added this blog to my Goodreads author page, so a word about where the books can be found. For my first book and the first edition of the second I formatted the manuscripts using Pressbooks online and published on Lulu.com. There wasn’t much effort involved to also publish Kirby at Marvel 1e through Amazon’s KDP program, so it was available in both places.

For the second edition of Kirby at Marvel, I typeset the book on my laptop using LaTeX. I wrote about details of the process here.
For reasons undisclosed, Amazon rejected the PDF of the manuscript I generated using free software. For it to be accepted, I needed to flatten the file which had the effect of measurably reducing the quality of the reproduction, particularly the images: the PDF size went from 58 megabytes (Lulu) to 14.2 megabytes (Amazon). Amazon is convenient but the Lulu version is visibly superior.
Steve Meyer helpfully provided this link for locating my books in the Lulu bookstore.