Hello. I own a MacBook Pro mid-2012 (I believe, is there a way to confirm?). Lately, my Mac has run really slow and it can't really multitask well. Yesterday, I edited a movie for a school project, and it was horrible! It lagged really bad and loaded slow. I did get the job done though, after a lot of swearing and rage.. I mostly use my MacBook for school work and sometimes watch movies, play videogames or just surf the Internet. So my question to you is: Is upgrading my RAM to 8 Gb what I need? I'm not some computer guru, so I'm not entirely sure. Also, what are the benefits of upgrading the amount of RAM in a computer? Anyways, thank you!