There's several clans you can check here: http://www.shellshockliveforums.com/forums/clans.61/ Each one has its primary goals that might combine with your objectives... get to know the clans and decide which one you want to try out for... when you decide post your interest in its thread *edit* Just realized you mentioned playing ssl2... im afraid there's not much clans active in ssl2 right now... but you can try checking here: http://www.shellshockliveforums.com/forums/clans.44/ i won't erase the first part in case you decide to play SSL steam.
You can always join my clan on the ssl2, we are mostly active in ssl2 since none of my members can't access steam Feel free to check out my clan @ http://www.shellshockliveforums.com/threads/the-black-tanks-tbt.4965/