Github
The official github project page.
Chat
The official IRC channel #cells is at irc.freenode.net - the cells developer team is lurking here for your questions. Don't be shy, just come in and ask. We won't bite.
Mailinglist
If you're planning to work with cells, please join the cells-talk mailinglist! Anyone is welcome.
The traffic is rather low. Nevertheless, we're having philosophic discussions about components.