If you don't have experience and you are a beginner, I suggest you don't mess around with the settings. Just ask someone who knows about TVs to do it for you. Until then just use the auto fixed settings.
I just purchased an LG 47LW5600 TV. I was checking out reviews on Amazon.com and someone mentioned that cnet provided information on how to calibrate this set in expert mode. If someone can point me in the right direction I would appreciate it. Thanks