I wrote this article which was published in Free Software Magazine: http://www.freesoftwaremagazine.com/free_issues/issue_09/intro_zope_1/
It's intended as a high-level overview of the language, and therefore glosses over some of the details. For example, I describe its function calling mechanism as pass-by-reference, because that's close enough for newcomers to get the gist of it. Anyway, the article's available under an open license. If you like it, feel free to pass it around. Enjoy! -- Kirk Strauser -- http://mail.python.org/mailman/listinfo/python-list