I'm glad he mentioned that he never uses minimize button (the yellow minus in the left-hand corner), because it seems even people who have used OS X for years d

I'm glad he mentioned that he never uses minimize button (the yellow minus in the left-hand corner), because it seems even people who have used OS X for years don't get this. Hide (CMD-H) is what you should be using when you want to minimize. Hide others (CMD-ALT-H) is also very useful. The only time minimize is useful is if you are using a particular application with multiple windows open and you aren't going to be working in one of those windows but don't want to close it because you might come back to it later. In addition to getting it off your screen, this is also helpful so that when you are hitting CTRL-` to switch between the app's windows the window you aren't working in doesn't come up. But if you want to get the whole application out of the way, just use hide.