1. First, copy the embed code from your lookbook
2. Edit one of the "Page Content" blocks on your site
3. Select the "Embed" block
4. Click the "</>" icon on the right of the text box
5. Paste your embed code and click "Set"
In order to see an accurate preview of the lookbooks you must sign out and visit your website as a regular user. Follow the instructions on Squarespace.