This website is free to sign up for and offers web videos, articles, tips and much more from the experts at Boys Town.
http://www.parenting.org News for Parents
This website contains TONS of information. Written in mostly article format, it is easy to search and has up to date info.
http://www.newsforparents.org Child and Youth Health
This website is out of Australia, but has awesome kid friendly information about being a kid and growing up.
http://www.cyh.com/SubDefault.aspx?p=255 Practical Parenting Information and News
This website has a variety of information on it ranging from the social/emotional health of children to their physical health as well. The site is divided into sections for parents, kids, and teens.
http://www.kidshealth.org Information about Child Behavior, Self Esteem, Values and Physical Development for 0-18
This website contains many articles on commonly asked questions about children and their development.