[Zope] Documentation on how to develop a product

I'm trying to learn how to implement a Zope product. I've found the BoringProduct. It's a good starter, but does not get me very far. I've also found the "Zope Developer's Guide (2.4 edition)" (at http://zope.org/Documentation/Books/ZDG/current). Is there anything else I can read that will help me learn how to develop a Zope Product? Thanks in advance for help and pointers. By the way, is the Developer's Guide still usable or used? It seems very old. It's full of comments and complaints that do not seem to have been addressed. And, word-wrap is broken (in both Opera and Foxfire) so that I have to scroll horizontally in order to read it. Dave -- Dave Kuhlman http://www.rexx.com/~dkuhlman