When I first installed Windows 8
I played with the tiles a bit - not worrying about closing them.
I left clicked and right clicked the screen to see what would happen.
Then I opened the desktop tile. The first thing I noticed was that the start button was missing but I thought maybe it's hidden just like "Auto-Hide the Task Bar" in Windows 7 so I moved my mouse to the lower left corner where the Start button used to be - And there it was!
Then I dragged the mouse up the left edge and saw that I could right click them to close them or left click to open them.
Then I tried the lower right corner where the task tray is Win 7 and the charms showed up!
It didn't take long before I tried right clicking the corners of the screens to find other goodies.
I must admit that I was surprised when I typed something on the tile screen and search came up. Now I use it all the time.
It was really pretty easy to figure out.
