Well to answer these questions adequaltely would require me being funded by a grant and taking a leave from work and publishing a book about my beliefs and opinions. (Seriously)
What is God? Firstly, God is the Creator. We can debate how God created by I don't see any compelling debate regarding "First Cause". IMO, it's is a requirement, and I believe that necessity is God ... or something we would call "God".
Secondly, God is Love ... just like John 3:16 says. IMO, God is hard to understand/comprehend. I also feel that it is another reason why God was incarnated into human form (Jesus). I feel Jesus had two purposes: [1] To suffer and die in attonement for mankind's sins (A LOT of sin translates into A LOT of suffering for Jesus), and [2] to show us the character of God and how God wants us to live and (specifically) how to treat our "neighbors" (everyone).
My personal favorite in this regard is the Book of Luke.
http://bible.gospelcom.net/...ter=1&version=31 I have always felt there was a God, even if nothing more than a "First Cause". I personally feel the accounts of Jesus are very convincing. I believe the Jesus speaks as the authority of God (He is God), so I accept that the God of the Bible is the "real deal". It would be interesting to see what I would think about God if there had not been Jesus. Again, from what I know of the world's religions, the Big 3 all pray to the same God, and I don't think that Buddhists pray to a God. So, I don't really know how many "different gods" people are praying to.
The Bible speaks of God as being omniscient, omnipresent, all-powerful, etc. Those conepts are so far above my understanding that they are hard for me to conceive and describe.
I believe there is a heaven. I believe it is where our souls go when we die. In the Bible someone asks Jesus about a woman that was widowed and re-married. They asked, in heaven, who would be her husband, the first guy or the second? Jesus explained that in heaven there are no spouses, children, etc. I interpret this to mean that our earthly concerns are no longer present. Sort of a place where were "just happy to be with God". I don't know that I can really speak authoritively about heaven, who is there, and who is not. I admit that I don't like the idea of hell, and I really don't like the idea of people that I care about going there. But, by the same token, I don't see where I have the stature to argue with God about it. Instead, I pray and ask God for the right words to come out of my mouth that might lead them to God.
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-- Every morning brings opportunity;
Each evening offers judgement. --