CIA - The World Factbook: Indonesia - Features map and brief descriptions of the geography, people, government, economy, communications, transportation, military and transnational issues.
US Department of State - Indonesia - Country portal offers a map and links to Background Notes, Country Study, the US embassy and the current ambassador, press releases, fact sheets, annual Human Rights Reports and other major reports including Industry Market Reports.
Wikipedia - Indonesia - Article covers the country's history, government and politics, geography, economy, demographics, language and culture.