you need to know what clans are for before thinking you need one.
clans are really stupid and useless. when the same guys play together enough that they share projects enough, they figure they make a clubhouse out of it. no benefits, no purpose.
but you should already have a "clan" long before you officially decide to name your little group and make a thread about it. no use being the thousandth guy here trying to recruit people to an empty group.
only idiots make and join clans in my opinion. waste of time