Athiesm is a Faith?

[Mister Agenda]

So the first Theist was an Athiest at the start and just invented GOD. Where did he/she get the idea from?

The first theist likely had little conception of the sort of God you're referring to. He or she would (most likely, given what of the history of religion can be discerned) have been an animist, believing that rocks and trees and the wind and so forth had personalities. There's an excellent book by Pascal Boyer that goes into some detail on what would likely have been in play in the head of the first theist: http://en.wikipedia.org/wiki/Religion_Explained