Just a quick note, being a believer in the Messiah by itself does not make one a Christian. E.g. Moslems also believe that Jesus is the Messiah and await the Second Coming.
1) God is the presence depicted in the Christian Bible. The Godhead is a Trinity of Father, Son, and Holy Spirit. The Apostles Creed and the Nicene Creed are a brief synopsis of who the Christian God is.
2) I'm here to learn, and I find a kind of joy finding other Christians to discuss things with even if we don't agree on all points.
3) To fulfil the path set before me, both that which has been revealed and that which has yet to be revealed
4) This questions can mean many things. What do you mean by it? I believe people will act according to their natures, and that we will see people's natures by their fruit. Are you asking whom I place trust in? I trust in that which is done from the heart. I trust in the goodness that shines through people into the world.
5) No. And as an aspect of authetic pride, unless someone is depressed or full of self-doubt, I don't think anyone would answer "yes" to this question. If someone were talking about past beliefs, that might be a different question because the past self can be seen as an external person. But like Paul reflecting on his time as Saul, were those trying times really without reason? or did they build his understanding into what it needed to be? So that he was able to speak from personal experience rather than secondary anecdote.
6) I have faith that the substance of my belief is correct even if the form is wrong. Life finds a way through love. Without Love there is no life. The question we should be asking isn't whether the procedure of our beliefs conform to a compelling understanding, but whether the substance of love within those beliefs is shining through. We are all dead without that love in our hearts. God is love