For effective Freedom of Information Act (FOIA) requesting methods, check out the Effective FOIA Requesting for Everyone: A National Security Archive Guide, which most valuably includes:

• FOIA Introduction
• FOIA Basics
• Making the FOIA Work for You
• Follow a Request Through the FOIA Process
• Classification of Government Information
• Archive’s Audits of FOIA Administration
• Noteworthy News Stories Made Possible by FOIA Documents
• Government Guidance, Directives and Statistics on FOIA
• Legislative History of FOIA
• International FOIA
• FOIA Links
• Declassification, Reclassification, and Redeclassification (PowerPoint document available for download)

Hat tip to ResourceShelf.com.