Questions are fine. I like questions. Normally it's all "Aaargh, maleficar!" or "Back, foul abomination!". Curiosity, I have no problem with.
The incredibly short version of events as I understand it is that when the Maker first created... well, everything, or more specifically the realm we know as the Fade, He populated it with Spirits - the first children. But He didn't give them the ability to imagine anything new, only to copy things they had already seen. So He portioned off a new realm using something we call the Veil, and made mortals to live there. Does that all make sense?