Book recommendation

[Kier Salmon]

Hello, I'm new on the list; Kier Salmon.
I live in Portland, Oregon and grew up in México, D.F. (18 years  
worth).  Although my ultimate goal is to learn Nahuatl (porque soy  
mula y me da coraje qué nunca pensé en hacerlo cuando era joven) at  
this moment my short term goal is to understand how the language is  
structured well enough so that the characters in a book I am planning  
to write (Alternate history starting in 1475 ish) will be able to  
speak in a way that has the "flavor" of the language, even though  
most of the words are English.   I'm less worried about portraying  
them well (I feel "el carácter mexica" hasn't changed too much) than  
I am to make their speech intelligible and at the same time give my  
reader the knowledge that these aren't modern people with modern  
ideology, what I call the "primitive moderns syndrome."
So the question for today is; I ran across the following book today  
in Powells (our big bookstore):

Nahuas and Spaniards: Postconquest Central Mexican History and  
Philology (Ucla Latin American Studies, Vol 76) by James Lockhart

Is it a worthwhile book for my purposes?
I've got close to 30 books waiting to be read... so I'm trying to be  
picky about the new books I buy.
Gracias (hmmm, como se daban gracias los tenochcas?)
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