networkn: Just watching that tutorial made me mad! I don't get why MS would head in such a backward direction. It's just so much harder to do stuff than it used to be, and less flexible! Putting two metro apps side by side just made me laugh and closing a metro app, now you need to wait for a popup and drag to the bottom of the screen! Hopeless, now what took less than a second with W7 now requires you to wait for an icon to appear which has a delay, and you need to drag to the screen!
You will have to explain to me how you are able to run "Metro" apps in Windows 7 and how they were quicker.
As for applications that run on the desktop (MSOffice, Internet explorer, etc. plus all the thousands of other such applications we are used to using) they run exactly the same in Windows 8 as in Windows 7, in fact the general opinion seems to be that they open and close faster.
Perhaps you are confused?