Simple questions of a new macbook pro user

Question

i have the 13 inch macbook pro 2011 .firstly what is the core function of the thunderbolt port.secondly i know how to calibrate my mac battery( which runs 3-4 hours maximum) in order to to increase battery efficiency but how do i do this long process in pakistan where there is atleast 12 hours of load shedding. this means charging battery with continuous breaks.thirdly why do i receive a small electric shock sometimes when my elbow slightly touches the laptop ......................and finally does the aluminium body of the macbook gets scratches and if it does are they removable

Answer 1

I will try to answer your questions:
1. Go to system preference --> appearance --> then you will see an option to double click title bar to minimize.
2. You can drag the window to maximize safari and it should "learn" this preference though I have a bookmark titled resize that I click on that maximizes my window. If you add a book mark and make the address this: javascript:self.moveTo(0,0);self.resizeTo(screen.availWidth,screen.availHeight) ;