To add facebook like box:
1. Go to this link: https://developers.facebook.com/docs/plugins/like-box-for-pages
2. Now, you just need the link of your Facebook page and put it on the ‘Facebook Page URL’ textbox.
3. You can explore and customize what do you want for your Facebook like box. You can resize, remove borders, show facebook page posts/faces and show headers.
4. To embed the Facebook like box, Click the ‘Get Code’ button after customizing the like box.
5. There’s a box that will pop out then click the ‘IFRAME’ tab and copy the code.
6. Next, Go to your site dashboard. Look for ‘Appearance’ tab and click it.
7. Click the ‘Widget’ tab under the appearance tab.
8. Now you will see different widget that you can add on your home page, sidebar and footer.
9. You can choose where you want to put your facebook like box.
10. Look for the ‘Text’ widget. Drag it and put it inside the HomePage(sidebar and footer if you want so).
11. Add the title of your widget. You can just add ‘facebook’ on the title.
12. Then put the code you’ve copied inside the text widget.
13. Don’t forget to save. Click it. It is located under the widget you created.