Good luck with the project, Peter! Anything anyone can do to provide "where to go to accomplish what" information is great.
Since getting my XO I've been bouncing back and forth among http://olpchelp.org
(including the discussion pages-behind-pages) enough to get seriously dizzy... not unpleasantly so... but dizzy. I've been saving links to olpc things I find useful as a http://del.icio.us/bstepno/olpc
I also resurrected an old blog, http://boblog.blogspot.com
, which just happened to be green, as a place to post news, links and comments. But now I'd better get back to "my real job," for the semester that starts Monday!