"What I realised mainly was that a lot of the OT stuff was based on oral tradition. That's why there are two versions of the creation story in the first couple of pages. One is a quick and basic, one is more detailed."

Are you kidding me? They are two completely different stories with different orders of how events progressed. The two origin stories being so radically different from each other should be the first clue to anyone that the bible is bullshit.