What is the use of the guild?

I just recently built one, but I don't quite get what is the use of it. I have found already a guild but what can I do with this guild?

Hey, the Guild House allows you to create your own guild

Check this thread for more information about it

Yes, but it's only about the guild house. My question is, when you have already built the house and founded a guild, what you can do with it then? What's the point of having it?

A guild is a collection of like-minded players who work together to help each other to succeed in the game by buffing each other or sharing resources. It becomes an online family, where everyone in the guild has become close friends.

If you knock down the Guild House while you are the owner of a Guild, it becomes disbanded