I just got my MBP yesterday (my first Mac ever) and am really enjoying it but one thing kind of stood out for me and that is the running of background programs. Anytime I open up an app such as iTunes or Pages and then close it, it will still be running in the background as I can see from doing the four-finger swipe. I understand this makes opening up the app much quicker if I want to use it again later, but I'm afraid it's really hogging up the system especially when I have a lot of apps running in the background that I closed earlier (say...iTunes, Pages, Safari, Numbers, etc). So is it better to manually right click and quit these background programs that I'm not using or can they just sit in the background without hogging up my system? Thankss