I am looking for specific information, but I don't know where to start?

I know they've calculated the odds, the statistical probabilities, of different things. I'm looking for specific odds: the odds of our sun achieving just the right orbit to support life, the odds of our atmosphere being just right for life, the odds of the chemical composition that is life (DNA and all) can form accidently, and so on; those kind of probabilities. I am also seeking the probability odds concerning the fine tuning of the universe. Does anyone out there know those calculations, and if so, what are they; or at least, where can I find them? Thank you for your time.