Japan Information Network
Rarely so we recommend a site that is primarily links, but here we have to make an exception - otherwise you'd miss too much that's too good. The Japan Information Network site is a annotated compendium of links to the social, economical, cultural, political, educational - well, you'll find it all here in various formats and with different emphases. Our favorites are the Virtual Museum, Japan Atlas, and Regions and Cities. Our brother, who's not a visual learner, likes Japan Insights, and Statistics. Your favorite will be there, too.