Winston - for evidence of the Big Bang, you might start with Universe: Cosmology 101 or any recent astronomy textbook. This NASA site presents it clearly and in a better organized fashion than I could. There are a great variety of observations that are terribly difficult to explain in any other (non-magickal) way.
One of the very early papers on the Big Bang was written in the 1940's by Richard(?) Alpher and Hans Bethe. Before they submitted it, though, they got George Gamow to sign on as a coauthor. That way, the paper was "Alpher, Bethe, Gamow." They intended this to be compared with the start of the Hebrew alphabet (and the start of everything?) - "aleph, beth, gimel..."