You should also consider joining some of the adoption group lists which can be very informative, supportive and give you up to date information. You can join a list specific to a country, etc., and/or special issues, for example, GAARP for older parents, Adoption_Agency_Research, IChild for those who are adopting from India, Guatemala_Adoption, etc. To see a list of many of adoption related groups: Karen Adoption Links.
PA DPW FBI Fingerprint clearances:
Do not go to a police department to get your fingerprints. There is a new system for obtaining fingerprints through the PA Department of Welfare, called COGENT.
American Immigration Council: Informative site for general immigration history and policy issues which includes many resources and lesson plans for teachers and community groups: American Immigration Council.