You got 30 mins and a bucket of aspirin?
I'll try to explain it:
It's the state of being where you understand that you are just a dream of the Godhead, but you do exist. In other words you are everything, nothing and one all at the same time. Once you understand this, you can alter the dream as you see fit. And you become more than a god as others understand it. I'm not sure but I think you need to be in a god like state already to even begin to really understand this, because they see things differently than mortals do.
According to MK and Heimskr's sermon, Talos used his CHIM powers to turn Cyrodiil from a jungle to the way it is in Oblivion.
Thanks.