Most of you probably already know this, but:
To use the keyboard to move between open windows, press the Alt key and the the Tab key.
If you press the Tab key a second time, another window will come up. You can press the Alt-Tab keys until the window you want is in front.
Also, an easy to minimize windows is to click on the windows name in the Task Bar at the bottom of the screen; to bring the window back up, just click on the window’s name in the Task Bar and up it comes.
I know these are all really basic, but some of you may not have known. Now you do!