I created a repository with two Sphinx projects, one for articles and one for the book. In the future, demonstration source code will be included there as well.
The repository is at http://github.com/cguardia/ZODB-Documentation. If you are among the volunteers that will be writing articles for this blog, I suggest you strongly consider cloning the repository and doing your work there.
At this moment the repository is empty, except for the book outline, but this will be changing soon.