So let's look at how I've been writing my book so far. Basically I work chapter by chapter but not necessarily in linear (1, 2, 3...) order. In fact I don't complete a chapter before going to another (I'm not very methodical).
So far I've completed a good draft of Chapter 2 which is about Charles Babbage and the Analytical Engine in Victorian times. I'll try to find a way of linking to or uploading this chapter so you have a good piece of material to read.
I research my material be reading books and web sources that I then collate and summarise - I'm trying to write a book that is fun and easy to read and most of the books that provide the source material are way too long and dull.
With this blog I now plan to put the rough notes of my research into the blog and use those as the basis for each chapter. Currently I'm using Google Docs to hold all my notes and chapter drafts. I like the sense of security it gives me of having my work in the cloud (I also export copies to my work and home computers).