9 of 31Image
The Start button gone? Not exactly. Aim the mouse pointer at the lower left corner to display this hint, clearly labeled Start. Click in that corner and you'll be whisked immediately to the Start screen.
Microsoft boasts that the Windows 8 Consumer Preview contains thousands of changes, large and small. This is one of the small but significant details. Each of these Start hints is a live depiction of the number and color of tiles on your actual, personalized Start screen.
When you snap the desktop to the side of the screen, every running Windows app gets its own thumbnail. Click a thumbnail to exand that desktop and switch to that program.