I'm buying a rarely used MacBook Pro 13in 2.4ghz. tomorrow. The person I am buying it from said it was purchased in Nov. is there anyway I can verify this? What are the difference say between the 2012, 2011, 2010, or things I should look for to make sure it is the newer MacBook Pro? Also, is there a way to check the up-time or anything that would show me the battery usage/life. Thanks for any help.