I am a computer science student studying Hinduism. I have some questions.

1. Are moksha and non dual awareness the same thing?
2. is brahman a being or a force? Tillich the Christian philosopher said God is not "a being" but rather "beingness itself". Is this what brahman is or is he a being?
3. Is brahma God? God cannot sin.Brahma sinned.Therefore brahma is not God. How do you answer this?