Mac 101: Locating files with the Title bar
You've got a window open, any window. A Finder window, say, or in many of the built-in Apple apps like TextEdit. Ever wonder exactly which directory you're looking at? Here's a simple trick that may be new to you if you're a switcher.
See the name of your file or folder at the top of that OS X window? It usually has a small icon right next to it. Command-click the name or title in that title bar and OS X will show you the directory tree that leads down to the item you're looking at.
And if you click on a folder in that list? Finder automatically opens a new window showing that folder. Very convenient.