I'm going to play Devil's Advocate here as I think it's worth doing. While I applaud efforts like this, and the enthusiasm here is amazing, there are quite a few books out there written by diabetics that try to explain it. A quick Amazon search reveals that here are a lot of books written by a lot of people in a lot of ways. If you are producing something new in this market place, you need to have something that others don't.
I think it's worth reviewing these publications before committing to what it is that you intend to do.
While the forum has a lot of members, would the outlay of producing it, even electronically, generate sufficient funds to cover the costs before returning something for research, or the end cause?