You just started brotha. Read, read, read and ask, ask, ask. Learn.

Don't worry about symetry at this point - but work your body as a whole. You are far from worrying about symetry. Use lots of compound free weight movements as your major exercises.

WORK YOUR LEGS! I don't give a flyin' fuck how long you played soccer or whatever... the testosterone and all around hormone boost you get from a heavy leg day pays off through out your body.