How wonderful that you're part of the Parent Cafe community - what's going on there is just amazing from my perspective. I don't know a lot about the kinds of materials they provide for how to host a Parent Cafe, but there are a LOT of resources for hosting World Cafe more generally - most of them on the World Cafe website in the "resources" section.
We also offer learning programs, one of which starts on September 16th. It's a robust, 8-week distance learning program offered in partnership with Fielding Graduate University. More information and registration are here if you are interested.