Adding a Facebook Feed
Go here to create the code you'll need:
You'll need to give it the URL of whatever Facebook page you want as a feed, then set the other parameters. Keep it simple: allow the feed to remain adaptive for width, so it will fit wherever you put it. Set the depth to 350 or 400—you need it deep enough to show some of the content, but not roll on forever. I like to use a small header to save space on the screen, but do whatever suits you.
When you have everything adjusted, click the "Get Code" button beneath the embedded display, and copy the code. Once you have it, paste it into an Embed App.