Joesnow

I am very new to the study of Hinduism and I was wondering if someone could clarify two things for me. Brahman is the Ultimate Being, who has no begining and no end, and is essentially the Highest God. Who did He create first? I've read it was Krishna or Shiva, and also many others. This confuses me. Also I was wondering who was the first of the finite beings, like humans, to have appeared in this universe? What I'm asking is, who was the first mortal, whether god or man?