Hi, fellow Apple users ^^ Newbie here ^^ I'm just recently bought a base 13" MBA 2012. I'm new to Mac OS X, and currently trying to learn. I have several questions. First of all, I feel that the aluminium case of MBA is somewhat soft, especially at the centre. If I squeeze the case when lid closed, it temporarily bent. When I release my fingers, it becomes normal. Is that usual? I tried to do this on MBP, but MPB is not like this. Secondly, I got MBA with Office 11 and iWork 09. Is there anyway to back up those applications that are already installed on the machine? Lastly, I have accepted iLife that comes with ML (My MBA comes with ML). Do I need to register the license of ML to my account? Is there any must-have apps? Any place or ebook that provide instruction on Mac OS X, specifically ML? Thank for help.