Yoshinori K. Okuji
A little note about Zope 3:
zope.kgs No matter whether it is easier or harder, this seems to be the way to go for Zope3...
Zope Component Architecture good documentation only about zope.interface and zope.component.
Zope 3 wiki so many (too many) pages about Zope 3.
Zope3PackageGuide useful, but zope.* should be included, for now the only way to look at http://svn.zope.org/.