Although at first it looks like a good way to play, camping is a foolish tactical thing to do and more importantly it isn't any fun. Camping can prolong a game to the point of sleep. Camper's stand-offs can put you off R6 completely. Clans are groups of players that play together and share the R6 world. They build friendships and compete as teams in tourneys and ladders.
Clans are a big part of online playing.
What a newbie needs to know is that not every clan is very good. Many are started by newbies. You should always try to get into the clan that can mop the floor with your behind. Always shoot for a clan that is higher than you in skill. Also, you do not need to be in a clan right of the bat.