Can Something Come From Nothing?
Yes something can most definitely come from nothing because everything on this universe has either always been here or came from nothing.
Does God exist?
Yes God most definitely does exist. None of our spirits would be able to happen if God was not real because then who would make us as special as we are.
Do humans have immortal soul?
Yes they do because after our bodies die our soul lives on and goes up to heaven and lives in eternity there.
Do humans have free will?
Yes humans have free will because they can make their own choices on what they want to learn and where they want to go in life. Even if they do not use it to their advantage they still have it.