On to the biggie - The Nature of God.
Warning: Logic and internal consistency may not exist in the following. I'm OK with that.
So, I believe that God exists. That's as far as I can get with certainty.
Is he eternal? Sort of? Only to the extent that the universe if infinitely old (to our reckoning) and will exist infinitely long (by our reckoning). But the universe isn't actually eternal, it had a beginning and, if I'm up to date on my astrophysics, will end one day. Did God exist before the universe? If not, how'd he come to being? I don't know. I like to imagine him a mad scientist who created the Big Bang and has watched the development with great interest.
I don't think God directly controls things. Maybe he got bored with the dinosaurs and decided to see what would happen if he tweaked gravity just enough to pull a comet into our orbit; maybe not. I believe he is capable of controlling every atom in existence but doesn't. I have a friend who believes that God's plan is absolute and we can not deviate, we think we are in control but He knows what is going to happen. I think, why would He do that? It'd be much more interesting to watch events unfold. (Yes, I want God to be like me and anthropomorphize Him a lot. It is only human to do so.) I'm not always sure God realizes we exist here. He does have an entire universe to look after. But I think he does, most of the time.
If God doesn't follow our lives in detail and doesn't make the world run, why pray? Because prayer is for us. By asking for God's help, we often remove the burden from ourselves. And he may whisper in our dreams helpful hints and words of encouragement. Because admitting our own faults allows us to acknowledge them and move on. Because giving praise lifts the spirit. (Can you not smile while singing "Joy to the World"?) God's not going to heal someone because you asked but you will feel like you have helped. I don't believe in praying for material or small stuff. When I pray for someone (or myself) I usually pray for peace of mind, strength, acceptance and the like. Not a good hair day, good parking space, etc. OMG, He has better things to worry about and so do you.
Finally - God is not male or female. He has no face, no body. She is everywhere and in everything you see and feel, especially the good things.