A practical guide on typography that covers everything from classifications to principles. It is well-written with tons of visual examples. The text face in the book is set in Retina, by Tobias Frere-Jones. It’s a good choice. Unfortunately Poulin who designed the book himself ruined it with vertical lines. They are so distracting. In addition, the type designer profiles, which are written in a couple paragraphs, are set in bold font with vertical lines. It is so disappointing to see a book on typography is not so readable.