http://practicaltypography.com/economics-year-one.html I found this on Hacker News. The author describes his raw numbers from his web-based self-published non-fiction book.
I've actually considered something similar to this, and I still am. What I would do (all I see is numbers, not how the thing is released) is put out a chapter once a week. Each sit around 2,500 words and I'd put it out there, probably sometime like Monday at noon (so people could get home and get right to it, if they wanted). Money wise I'd probably put ads up (just to gather some money from whoever isn't using adblocker) and then ask for donations. I don't know if my book is good enough, but I feel like it could work as a way of self publishing. Maybe do it like comics and have some cover art for each chapter and dub it an 'issue'.
