BoardSource released, The Handbook of Nonprofit Governance recently.  It covers a wide range of topics from computing available cash to establishing internal controls.  Establishing Executive Director compensation to creating a dashboard.  This text boook has become my new hands on reference resource.  It is one of the definitive resources for getting answers to many of the governance questions that routinely arise in the social sector.  If you want the closest thing to the numerous resources that comes with a membership to BoardSource but have not committed to joining then this book would be my recommendation.