Declan J Keane

Appropriate for quick reference but for a more substantial examination of typography I'd suggest looking elsewhere. Thinking with Type is a good entry point. That said it's still a quality book with some nice examples of good and bad typesetting.

A must read for a designer at any point in their career. Concise information which is all useful and presented in a beautiful typeset book.

Short and to the point with plenty of necessary advice this, like know your onions, has given me plenty of pointers.
As a second year design student I'm constantly worrying about the best way to get a placement at a design firm yet allot of those nagging thoughts were put to rest by this book's no nonsense advice and insight into the employers mind.
Must read for any student, it's tiny so no excuse.