What is a one-sentence summary of the following article?
It's in the menu bar at the top. It's in the tools menu.  It's next to the green icon with the "+" sign. Subscribed folders appear in the navigation pane. The navigation pane is to the left. Click a public folder to view the contents of that folder.

Summary:
Click Tools. Click Public Folders. Click a public folder. Click Subscribe. Click a folder in the navigation pane.