Lupton 91-96 102-110 Bringhurst 30-34
You should run wording with a vertical baseline against the spine of a book. Redundancy are good when making a system. You can make indent, out dents, or line breaks as your Redundancies. You can also break up paragraphs in many ways. The space between letters is infinite but look to ascetics to find the right space for you. If you plan on kerning, make sure you review all of the text, because no kerning is always better then poor kerning.