Free will is covered pretty extensively on this site, although as the wiki page suggests, it can be a useful experience to work out for yourself.

Moral absolutes are also addressed, but since I'm having trouble remembering the names of the articles, it's easier to simply ask; can you explain how we would observe the universe to be different if there were definitively no moral absolutes?

Consciousness is probably the least open-and-shut case of the three. Some reading is available here, but it might be quicker to deal with the question by asking this. Is the entirety of the consciousness contained in a supernatural entity? That is, is it an irreducible mental thing? If so, why does a person's mental state correspond so consistently to the physical state of their brain? If not, and the supernatural phenomenon merely translates the physical states into subjective experience, why suppose that something that doesn't follow the rules that every other known thing in existence does is the best explanation for this one thing, given that we've never found evidence of anything like that anywhere else?