here are a bunch of websites I've found that teach you some japanese and/or about japan:
http://japanese.about.com/
http://www.japanese-online.com/
http://web-japan.org/kidsweb/
Here's a great reference link:
http://www.loc.gov/rr/international/asian/japan/japan.html
_maru_
The Japanese Student Guild
The place to learn about Japan and all facets of Japanese culture
