I have found the following book to be indispensable. It is packed with code examples, and a clear layout of the spec. Anyone who like to "see" examples this is the book for you. It is fairly detailed, but not overwhelming.
Practical Formatting Using XSL-FO (Extensible Stylesheet Language Formatting Objects)
Crane Software
www.CraneSoftwrights.com
I think it should be added to he resources page.
My 2 cents
Rob
