Even if you do not have a Facebook page, you can still benefit by adding the Facebook module to your site. Your website visitors that have Facebook accounts will be able to share your website easily with other Facebook users which will help your site's audience grow.
To implement a Facebook link in your website, please follow the next steps.
If you select the Like Box or the Banner type, enter your Facebook web address into the box. To find out what your web address (URL) is or to choose a Facebook web address, go to the Facebook Username Site.
If you already have a web address, it will be displayed here, or you can choose a web address as long as it is not already used by another user.
When you are finished, click Save.
Now when your website visitors that have Facebook come to your website, they can click the "Like" button to advertise to other Facebook users that your website is worth a look.