Chapter 3 of the Base Guide has been uploaded to the ODFAuthors website, Base 3.4 Draft folder. This is a major rewrite. Screen shots are from LO 3.6.3.2. Changes have been made on the Document/Development page accordingly.
While I was there I noticed the Chapter 2 is waiting for someone to review it also. Mark and Helen helped me with this last spring, but I have done a major rewrite of it. (Upload date of the latest version: 09 Sep 2012.)
I anticipate having completed a thorough review and rewrite of chapter 4 by the end of December, sooner if possible.
--Dan