First of all, this is in the wrong forum... sort of.
Second:
There are two methods to own a clan:
-Have 8,000,000 (8 million) rep earned. You can then purchase the clan from the Rep Store on www.womrealms.com (No real money required).
-Clan leaders can also give ownership of a clan to a clan member.

To join a clan, you must have 35,000 rep to purchase a Clan Application (No real money required), which is found in the Rep Store. After purchasing, you must fill out the application and SAVE it by clicking the save button at the bottom.

As for World of Minecraft notice, I do not understand what you mean by that. I've never heard of that kind of feature.