US Department of State and the CIA Factbook which are both online. MIT has some excellent free course materials in all subjects, including American History, etc. UK has it’s Foreign Ministry site. It would be interesting to see what they are saying about us. (~Or would that still be the Colonial Office?) I would access the Aussies and Canadian Foreign Ministry information sites to see what they have to say as well. World Book Almanac. Wikipedia will lead to an unlimited amount of related links on every subject concerning the US, especially if you take the States on a state-to-state basis. Encyclopedia Britannica. I would access any countries’ sites for which I could understand the language. That should get you started and lead to many other sources and links and hours and hours of surfing.