I finally received my 2015 13" rMBP, 256GB SSD yesterday. I love it and want it to last. This seems like a silly question but I feel it may be worth asking. For someone like me an average user, who uses his laptop everyday - what should I do when I am not using my mac? Should I shut it down or simply put it to sleep ? Does it even matter ? I am aware of Apple's recommendations for a healthier battery life - plug in the charger only after more than 60% of the battery has been depleted and shut it down if not being used for more than 2 or 3 days. If what we do does make a difference I would like to know why (if possible). Thanks in advance.