how do i print screen on mac book pro

Press COMMAND-SHIFT-3 to take a snapshot of the entire screen. It will create an image file on your Desktop. Open the file in Preview and print it. Or you can also use the Grab utility in the Utilities folder.

If you're a Windows switcher, see

Switch 101: On Windows, I used to...

<http://support.apple.com/kb/HT2514>

What’s it called on my Mac?

<http://docs.info.apple.com/article.html?path=Mac/10.7/en/cpmh0038.html>