[Zope] Zope3 - where to start?

Hi :) I'm a total newbie to Zope and I would like to learn it... Unfortunatelly I can't find any good documentation to start with (it could be that I'm a very bad researcher)... All of the Zope3 documentation on zope.org is about developing it and not about using it :( Is there a "ZopeBook" or something similiar for Zope 3? Could you please recommend some place I could start learning it (articles, tutorials, etc.)? Please excuse my poor English. Best regards, Crocodil