1. From your home page, hover your mouse to the left of the left side News Feed menu.
2. Select Edit.
3. A list of people, apps, Pages, and groups you’ve hidden or unsubscribed from will appear in a pop-up box. Click the X next to each one you'd like to remove from this list.
4. Click Save.

Removing someone or something from your list of hidden stories means those stories can appear in your News Feed again.