Nuggets List is the main location that you can manage all your nuggets. You can access List of Nuggets via Management Center | Nuggets.
You'll see a blank list as the image below. From this point on you can either select a "Category" from the combo box or click "Show All Nuggets".
Blank Nuggets List
The fields names are quite straightforward: NUGGET is the title of the Nugget, DATE displays the creation date of it. The column VIS/HID displays whether the Nugget is visible or not.
If you click the "preview" link, you can see the preview of the Nugget below the list.
You can edit an item by just clicking the title. For editing a Nugget (and also for entering a new one), see Add / Edit Nugget.
List of Nuggets
By using the "delete" link, you can delete a nugget. You can also delete a nugget from Add / Edit Nugget.
Please note that Preview gives you just a coarse view of the Nugget. It may be different from the real page view. One of the reasons for this divergence is the possible CSS differences.
Preview displays a random nugget and also it may be randomly chosen from a non-visible nugget. Also, only a single slot is displayed.