A Facebook "App" is necessary for a lot of integration with Facebook into your site. The Facebook 'App' is what allows users to authenticate on your site with Facebook. While you may not want general users to be able to login with Facebook, if you want to have content post automatically to your Facebook Page or read in the feed from your Facebook Page to show on your site, you (the admin) will need to login using Facebook on your site. That login will have some prompts to grant your Application (your website) permission to read or post to your Facebook Pages.
So, the first step to integrating with your Facebook Page is actually creating a Facebook App for your website so that your website can act on your behalf.
Here's some documentation pages that should be useful in getting you started:
*
Facebook Application Setup Guide
* Enable the SCLogin module and login with Facebook on the front end. This will grant initial permissions that let you setup the link to your Facebook Page.
*
Creating a social channel
- This is what's used to post content to or read a feed from a Facebook Page
* Login again on the front-end again with Facebook - This will grant the permissions to post or read from your Page
* You can disable the SCLogin module at this point if you don't want normal users to authenticate with social networks
I hope that helps give you a quick overview, but if you get stuck anywhere else, just let us know!
Thanks,
Alex