How to display a folder knowing its path? How can I display a folder in a different Finder window knowing its path ?
In the "Go" Menu in Finder there is a "Go to Folder..." menu item.

Alternatively you can use the shortcut:  Cmd ⌘   Shift ⇧  G

You can 


Open a new Finder window
Use either of those commands
Type the path in the dialog that appears