Before I became a Christian I went to this youth group with my friends where they believe that they ARE God, and that everything around them is a power, that is God. It wasn't a person or anything specific...it was just an existance within them. Kind of like part of your soul. I don't even know what it was called (the religion) but I know that the place was called the centre for spiritual living or whatever. It was alright, I met some great people there.
Even if you did decide to check out different churches or religious groups, you don't have to believe in their God right off the bat. You can always just explore.
Good luck
Jennifer