If by “resource,” we can mean “personal opinions from those who are living their lives as poly and trying to make sense of it,” then this is a great resource: The Ordinary Extraordinary. Anna and Alan share their opinions, experiences and photos (politely divided into naked and clothed) about their poly lifestyle. Like the rest of us, they face misconceptions as well as some wonderful open poly experiences.
And they’re nice enough to share with the rest of us. Thanks, guys!