First time MAC user here. How easy is it to upgrade the HD and do a restore so you don't lose your layout, setup etc on the Macbook Pro 15? This is the new one with no compartments on the bottom. I am new to the MAC world but have used PC's all my life. I don't know what software or what it takes to open this guy up. I have a 500gb HD WD Blue I want to install in here to give me more space. Also any connections on memory for cheaper price for this guy? Thanks!