I bought a new Plasma TV, now what?

So, I finally broke down and replaced my old JVC with this TV:

http://www.sears.com/shc/s/p_10153_1...&blockType=G13

I don't know much about TV's, I hear that Plasma's need to be "broken in" properly and calibrated.

I wondered if some of the TV guys can help me with the do's and do not's of my new TV?

Thanks in advance.