i think there is a 'community' associated with 'DHARMA TRADING COMPANY' if you visit their web site there is a link to join the group. there are probably lots more but that's the only one i can think of right off hand- check locally too, we have an lqs that kind of specializes in textile art and is always having classes in dyeing techniques, batiking, fabric painting...all of it...you may have one close too.