Do you have an outline you could share with us, Alex?
Here's where I'm currently at. Things might move around.
2. How Bitcoin Works
3. Why Use Bitcoin
4. What is Money
5. Peer-to-Peer Technologies
6. Satoshi Nakamoto & the Cypherpunks
7. Bitcoin's Competition
8. New Technology, Old Companies
9. Inflation, Deflation, and Stability
10. The Future
The first half generally deals with the basics needed to fully appreciate Bitcoin. It's geared towards people who have heard of Bitcoin but don't know very much about it. The second half contains more original research and analysis. My general goal is to relate Bitcoin to things people already understand.
I will probably publish them separately as ebooks and together in a paperback later on.
I'm not exactly focusing on technical and philosophical aspects, basically the purpose of the book is to introduce Bitcoin to newbies, and present the revolutionary currency to them in an interesting way. If you want to target existing Bitcoin users, business will be a great way to go - Bitcoin needs more entrepreneurs. Either way is perfectly fine.
I guess by "business" I mean that I look at Bitcoin from the perspective of a business person rather than a computer programmer (i have no programming background). We both have the same goal of introducing Bitcoin to newbies, just in different ways.