Adding a Facebook link to your WordPress blog is easy. All you need is a Facebook account, and a Facebook app.
To add a Facebook link to your WordPress blog, first sign in to your Facebook account.
Next, open the Facebook app on your phone or computer.
Click on the “Pages” tab at the top of the app.
Click on the “Pages you manage” link next to your blog’s name.
Click on the “Edit” link next to the Facebook link on your blog.
Click on the “Link properties” button.
Click on the “Link URL” button.
Enter the URL to your WordPress blog in the “Link URL” box.
Enter the “FB Share” box with the Facebook share button enabled.
Click on the “Update” button.
Your Facebook link will now be on your WordPress blog.