Notice the change of direction in tone here. We went from "can something come from nothing" to "how can something come from nothing" without stopping for breath. The first question is valid, while the second smuggles in a strawman that we're supposed to defend.
To address both questions in order:
Maybe.
No idea.
To address both questions in order:
Maybe.
No idea.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'