If you are interested in the subject of the Big Bang I highly recommend reading stuff by Stephen Hawking. Unlike the writings of Neil deGrasse Tyson, which are oriented more towards just saying "space is awesome and this is why", Stephen dabbles more into the physics behind it while retaining the ability to speak to a generalized audience.
The "who created god" question is one that's asked a lot that nobody really has a good answer for. God isn't in the realm of science though - God is in the realm of philosophy, specifically religious philosophy, so trying to prove him one way or another is really for naught. I myself consider myself spiritual but not religious and don't have a god in the sense of a Christian one, but I'm not really atheist either.
Technically, I don't really believe in the traditional Big Bang theory either! Lol, but I believe in most of it. The difference is I don't believe it was always "very dense and suddenly expanded". I think that our universe is the result of a black hole from another universe meeting the end of its life. To me, it solves something called the "black hole information paradox" as well as the origin of our universe and why it technically has finite size. It also prevents the causation issues that you presented.
The "who created god" question is one that's asked a lot that nobody really has a good answer for. God isn't in the realm of science though - God is in the realm of philosophy, specifically religious philosophy, so trying to prove him one way or another is really for naught. I myself consider myself spiritual but not religious and don't have a god in the sense of a Christian one, but I'm not really atheist either.
Technically, I don't really believe in the traditional Big Bang theory either! Lol, but I believe in most of it. The difference is I don't believe it was always "very dense and suddenly expanded". I think that our universe is the result of a black hole from another universe meeting the end of its life. To me, it solves something called the "black hole information paradox" as well as the origin of our universe and why it technically has finite size. It also prevents the causation issues that you presented.