The U.S. Department of Health and Human Services' Child Welfare Information Gateway is an excellent online tool to get started when looking for information on adoption. The gateway features information on domestic and inter-country adoption. Its resources contain a wealth of information on adopting, especially from the U.S. Foster Care System.
This gateway also includes information on choosing of adoption facilitating professionals and agencies. In addition, there are resources for adopted adults, primers for expectant parents considering adoption, and support groups for parents and children that are part of adopting or adopted families. Another informative, albeit unofficial, source of information on adoption is Adoption.com. They have an easy to follow wizard that guides visitors to different resources based on whether they are pregnant and looking to put up children for adoption, singles or couples who are looking to adopt, already adoptive parents, adopted, birth parents or family members that are looking to get in touch with their adoptive children or parents, or adoption professionals that are looking to facilitate their match-making. Another resource that prospective adopters should consider checking is the Ten Step Overview of the National Adoption Center, which outlines the ten basic steps required to adopt a child in the US.