[Zope] Five pointers

[Mark Gibson]

I'm developing a new product for a Zope 2.9.7 site (no CMF).  I'd like 
to use Zope 3 technologies for this product.  I've been looking around 
for a few days, most of what I see describes development for Zope 3, or 
Five in the context of Plone.

Is there a tutorial or a product I can reference that describes how to 
build a few simple content types "the Zope 3 way" in Zope 2?