I was lucky enough to find a copy of Guide to Assembly Language: A Concise Introduction by James T. Streib which has been immensely helpful. http://link.springer.com/book/10.1007/978-0-85729-271-1

I also stumbled on The Art of Assembly which may prove promising. http://www.ic.unicamp.br/~pannain/mc404/aulas/pdfs/Art%20Of%...