I strongly suggest signing up here: viewtopic.php?f=341&t=205691
That's the first step to finding a good clan imo.
Then when you build up your rank some and gain a little experience, come back and apply to a clan. The more game experience and understanding that you have, the better the clan you will be eligible for. CC is different than the board game, even at a more basic level, so getting a little training is a good idea if you're looking to compete competitively. Good luck =)