Clans offer a multitude of things such as Clan Banks and Armouries.
Clan banks enable you to give back to the clan, or take from it if you're a high enough rank, just make sure you pay the money back or the clan leaders may not be too happy with you!
Clan armouries are a place that enables users to borrow other people's equipment that they have added to the armoury for everyone to use, be nice though, don't hog too much equipment! It's rude!
-Peasants United- is the most recommended clan for new players, everyone gets accepted and can borrow equipment for free from the huge clan armoury. The currently only active Clan Leader Cassi_cRPG_help is happy to help any new player, feel free to ask her anything you are curious about.
 link to clan page