I'm not sure if it's a web site oddity, but I can no longer download the document that you've linked to in this thread.
I had one question for you about this book. I have the "Preliminary Edition" now that students will be buying for my class this semester. It is 6 chapters long. I know additional chapters are in the pipeline and will be distributed electronically. Can you give us a heads up on what the topic of those chapters will be? I'm not seeing that in any of the generally distributed literature I have about this book.