The main differences: When you log in to Windows 8, the first screen you see is the new ‘Start Screen’, also known as ‘Metro’. It still has the familiar ‘Desktop’ as well but we’ll come to that in a minute. Instead of Icons, the new Start screen has ‘Tiles’. You click these to open your ‘Apps’ (short for Applications). If you can’t find a particular tile, do a right mouse click in the space at the bottom of the screen and click All Apps. - See more at: http://digitalunite.com/guides/computer-basics/windows-8/what-are-differences-between-windows-7-and-windows-8#sthash.1XBhtxa1.dpuf