These files comprise the entire book. You may download them and use them for free, no strings attached. You may not excerpt or quote them without attribution, much less with somebody else's name on them.
Once you've started reading the book and working through it, if you think it's worth a few dollars to you, you can pay me for it:I spent perhaps a thousand hours (over the course of four years) writing and rewriting the book. If 1500 people voluntarily paid $5.00 each, I would have earned minimum wage on it. So far, I've earned less than a dollar per hour :-)
The following files are dated June 2013; their pagination may not agree perfectly with that of previously printed books.