we are currently running a special to the end of october for free membership to our club, Great Lakes Betta Society. if you are interested you can contact either me or cpowell.
if you go to the ibc page, they list groups and clubs by region, both in the US and elsewhere. thats how i found the arizona group. you can also search for groups through yahoo groups, msn groups, etc. many of these are used by smaller groups and clubs until they can affort their own website. you can also try this site: http/www.meetup.com/