Please come to:
http://byteball.slack.com Tell them negerkolle sent you. They will explain everything for you and help ease your mind. They might even give you some free balls like they gave me yesterday!
This may be blindingly obvious to most (I've never used Slack) but when I go there it says 'Contact the team administrator for an invitation' ... how do you do that? The text isn't hyperlinked, and I don't see any kind of register option.