I would suggest the following:
a) We create a simple starting point for user and developer
documentation. Served by github pages. Maybe a like the owncloud
documentation: http://doc.owncloud.org/. I think we can almost copy the
owncloud.org structure, to also provide downloads, a feature summaryze etc.
b) [later] we create a users plattform on foodcoops.net, where every
foodcoop can maintain something like a profile. A long time ago, we
build simple app to that for anti nuclear organisations. [1] But maybe,
this is an overhead, and we sould better advise the users to use
http://coops.bombina.net or something else.
c) [optional] We setup a forum, where users can answer users questions.
I hope, this can save us plenty of time in supporting new foodsoft users.
d) [optional] Or we use a saas plattform like uservoice.com.
What do you thing?