I was just asked about book design titles. Here are some that have stayed close to my desk:
The Elements of Typographic Style by Robert Bringhurst
Everything you need to know is in this book. This book is beautifully designed and printed. The books have a ribbon bookmark. Mine is set on the spread of ratios. At one time I worked through the math and proportions for every book I designed. Eventually, I had a body of experience that I could refer to — templates, notes, and printed results of my efforts. At this point, amazingly enough, some of it now part of my own body. That is, I can amaze myself by drawing boxes or choosing positions on the page that turn out to be in proportion if I check the math. I’ve absorbed the aesthetic.
The Design of Books by Adrian Wilson
This great book appears to be out of print. I have a copy that was issued by Chronicle Books in 1993. The process and methods in the book are pre-desktop computing. The book is richly illustrated with examples of book design from the 1960. Adrian Wilson worked at a time when comping was done by hand and the designer communicated their vision to various craftspeople who worked in other buildings or other towns. Those methods enforced a clarity of vision that we do not need in a world where we can create a visual faster than we can imagine it. Covers type, papers, binding, boxes for limited editions — I return to this book again and again for inspiration.
The Form of the Book: Essays on the Morality of Good Design by Jan Tschichold
This one is out of print too. Guess that says a lot right there. This collection of essays covers typography and the materials of book production. I have a flag on the page about footnotes. Between Bringhurst and Tschichold, you can learn everything you need about setting beautiful type