Or if you're really in the mood for real science (as opposed to wikipedia summaries) read the Particle data group articles on big bang cosmology for an overview and the article on big bang nucleosynthesis for a summary of the formation of baryonic matter. There are also articles on Cosmological paramters and Dark Matter that go into the theory behind and the evidence for dark energy and dark matter. Happy reading.

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"I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind." - William Thompson, 1st Baron Lord Kelvin

"If it was so, it might be, and if it were so, it would be, but as it isn't, it ain't. That's logic!" - Tweedledee

This isn't right. This isn't even wrong. - Wolfgang Pauli