I have recently become interested in book design, mostly for self-publishing purposes. So I've been learning a lot about the arcane arts of typography and font selection and terms like "ligature" and "folio" and "optical alignment." Most of my work has been digital, learning to use modern software like Sigil and Affinity Publisher (a much cheaper alternative to Adobe InDesign). I have learned, for example, that I can design better ebooks than a lot of professional ebook designers, and I'm even pretty good at laying out print versions.
This weighty book, which showcases enough designs to be an artful design work in itself, is more of a textbook than a how-to guide. It covers every aspect of the bookmaking process, and the history of printing. A lot of it is interesting, if out of date, and the sheer variety and attention to detail that goes into everything from font design to line spacing to paper selection to binding will probably exhaust anyone but a professional printer. This is a dense and comprehensive tome. There are chapters about color separation and grids and visual presentation and people who are reviving old school binding techniques. There are also a lot of references to the then-new (this book was published in 2006) field of digital typesetting and layout. Mostly talking about QuarkXPress, which I guess still exists, but most professionals nowadays use InDesign. A lot of the "challenges" of digital layout and typography are now done automatically by modern software. And of course, this book was published before ebooks were really a thing, so no mention of them at all.
This is a nice book to have on your shelf to appreciate the art of printing and book design, but it's more of a reference and coffee table book than an instruction manual.