Welcome to my forum! I'm glad you like it here^^. Your welcome to start up any topic/poll etc your like.
As for joining the deviantart clubs...you need to be a member of deviantart to be able to join. Check out http://www.deviantart.com
for more info of joining. Once you have an account set up with them...just note any of the clubs listed saying you like to join with "Join" in the subject line. Hope that helps?