Tom,
I know you said that you wanted a book (which is pretty rare these days), but as far as Internet sites go, here is a place to start:
http://www.psk31.com/As far as an ink on paper resource, you can't hardly beat, "ARRL's HF Digital Handbook" by Steve Ford, WB8IMY. It is available from the ARRL for $19.95, but you can save a whole dollar by buying it from Amazon.
Good luck!
Scott N0IU