The Facebook Like Box widget lets you display a Facebook Like Box within a sidebar on your theme.
You can set it up by following these steps:
- Go to Appearance > Widgets in your WordPress Dashboard.
- Drag the “Facebook Like Box (Jetpack)” widget into one of your active sidebars.
- Fill out the options, including your Facebook Page URL.
- Click “Save” to save your changes.
The widget options will look like this: