I think this list and #plan9 on freenode are your best options. I don't believe many people are using the 9gridchan stuff directly at this point, but all the fundamentals are the same as any other Plan 9 system. It may require a bit of poking, but I'm sure folks in one of those two places can help you out.
#plan9 on freenode can be a great place to get help, but like any small IRC channel, it's sort of hit-or-miss who you get. If nobody in the room at the moment can help, try again later. I haven't seen any 9gridchan questions recently. Anthony