Our favorite resources for general adoption and foster care information are run by the U.S. government.

The U.S. Department of Health and Human Services runs the Child Welfare Information Gateway. In their own words:

provides access to information and resources to help protect children and strengthen families. Visit often for the latest on a wide range of topics from prevention to permanency, including child welfare, child abuse and neglect, foster care, and adoption

The U.S. State Department is a good source for information on intercountry adoption. And to stay on top of changes, read their adoption alerts page. They don't have a RSS Feed or an email alert system for their updates. So you have to read their website.