Your toolbar should already be open along the left side of your screen. If not, click on the Open Tools icon in the top left corner of your screen, just below the Menu bar. The toolbar gives you quick access to most of PNN's features and your all-important preferences.
Now look at the items on your page. You'll notice that small bars with "edit" and the trashcan icon appear at the top of each item on the broadcast. We call these edit bars. They let you move, edit or delete items. For more about that, navigate to "Using the Edit Bar to Move, Edit and Delete."