In essence, God is what compels us, drives us, even forces us to do things. The way we live our lives are based around our experiences and beliefs which compel us, drive us and even force us to do things. If you really think about it considering everything, God essentially is an idea which acts as a guide through life - compelling, driving, etc.
It doesnt matter how or what you believe in as long as you DO believe in it. The core basics of every religion are the same - subject to very little variance and so whats important isnt "whcih god" or "how" but simply just to believe.
Some of us are compelled to work out the kinks of this and consider how or why. This desire itself is part of your god. This is because you follow the rules in your mind that say that it is alright for you to ask these questions.
Im sure iive repeated myself enoiugh but in the very essence and core of everything - God IS, in a sense, everything and everywhere. But what you can define as god is not out there somewhere but rather, inside somewhere. what is stated about god is usually quite true but what god IS, is something that varies everywhere. It is what entitles this "god" which matters.