I've changed several things since I last posted.The first is I made my book available through CreateSpace.  I approved the proofs, and now I'm waiting for the book to show up on Amazon.  It's supposed to take 5-10 business days.  I'm on Day 4, and nothing yet.

I also sent a request to Kindle that previous buyers of my book be able to update their copy with a newer version.  I thought about this a lot.  On the one hand, it should be obvious: of course I would want every...