[UPDATE: 7/30 There seems to be an issue with connecting to a Facebook PAGE right now (check the comments). Also, due to my daughter being mortified that I was talking about our knitting site here, she refuses to write or post anything so I've started a couple of other ss6 sites. As soon as they are some what presentable, I'll post the links.]
The Squarespace 6 Facebook Page Module has been the smoothest part of building my Squarespace six beta test site to date. It took less than five minutes and would of been less if I wasn’t taking screenshots to write this tutorial! You can find the Facebook Page sync tab in the Settings Module.
Squarespace allows you to specify a gallery and page on your site to embed within one of your Facebook pages. Select a page and gallery you wish to connect below. After connecting, Squarespace will ask you which of your pages within Facebook you wish to install these pages on.