Hi everybody, I just got my first Macbook after hesitating about moving away from Windows ecosystem for a very long time. Everything is new to me and the trackpad is AMAZING, which no Windows ultra book can compete against. (Mine is Macbook Air 2012 the 128 base-model). Despite the fact that I am willing to learn, I still have a hard time to have a smooth transition into Mac OS X. So I figure I can get some help here: - Since I still need to use Windows, I will have Bootcamp for my Win 7. Due to the limited space on the Air, I bought a 1TB 3.0 USB portable Hard drive from Amazon (http://www.amazon.com/gp/product/B00834SK5W/ref=oh_details_o00_s00_i00). I know that the hard drive needs to be formatted properly in order to share file between Mac and Windows. I read several articles about the pros and cons of each format and attempt to format them like this: +30%: NTFS: for Windows +30%: HFS+ for Mac +40%: exFAT for file storage because it can be shared between Mac and Windows Given above plan, do you have any suggestion or correction for me? 2. Is there any way I can free up some space on my already limited MBA? 3. One of the key on my keyboard, the ".", gets stuck. (Ugh!) I just bought my MBA last week from Amazon, will AppleStore give me an exchange or fix it for me? Thank you very much!