As promised, the EPUB (for almost all non-Kindle readers) on Lulu is now free. Please go here if you’d like to download it, and tell your friends! 🙂 Amazon’s minimum price is $0.99, so for now, that one is still a purchase. I may post a direct mobi download from this site later, but you may also convert it using Calibre; emailing the file using the Amazon online conversion service may also work, but I haven’t tried this. (And be wary of 3G charges if you have a 3G Kindle.)
The other book stores (iBooks, Nook) will be receiving the price update in the coming days or weeks, but as I mentioned above, you can use the EPUB to get a copy more quickly if you like.
The print book cannot, of course, be set to free. However, it has been reduced to basically at-cost at this point.
Next project: Getting the wiki going!