As I am new, and don't know all of the muscles and how to work them, and what to work them with, I found a really great website that not only shows the picture of the muscle, but tells you how to work it with each type of weight (dumbells, barbells, cables, etc). So here it is, hopefully others can find it as useful as I have:
http://www.exrx.net/Lists/Directory.html
http://www.exrx.net/Lists/Directory.html

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