Here are a few recommended useful websites:
www.hud.gov (FHA)
www.efanniemae.com
www.freddiemac.com
www.va.gov
www.thomas-law.com (All 50 state Mortgage and Banking Requirements)
www.myfico.com (Credit Information)
www.netronline.com (Public Records search - Nationwide)
www.realtor.com (National Association of Realtors - MLS)