i got a mac book air A1369 ci5 today, but unfortunately it running only windows. and there is no backup of mac on hdd available. i'm newbie on mac. now i want to know some procedures, 1. which version of mac i can install on my MBA?(the latest one possible for mac) 2. any link or torrent to that iso of mac. 3. and how to install mac on it. 4. how i can run windows and mac both on my MBA? i'll be very thankful for help.