A number of excellent resources focused on international cultures are available online. Below are links to country-specific cultural information for Japan. For a complete list of culture resources, please visit globalEDGE's Global Resource Directory
The Centre for Intercultural Learning (offered by Foreign Affairs and International Trade Canada) offers resources related to developing and refining the intercultural skills vital to a successful international experience. Available resources include over 100 “Cultural Insights” providing a local and Canadian prospective on culture for countries all over the world, the Centre's Intercultures Magazine, and freely available research and discussion papers.
CultureCrossing.net is an evolving database of cross-cultural information about every country in the world. This user-built guide allows people from all walks of life to share essential tips with each other about how to navigate our increasingly borderless world with savvy and sensitivity.
Kwintessential includes several useful tools, including several language tools (language identifier, popular phrases, translation guides) as well as several culture related guides (doing business in guides, expat relocation guides, and business etiquette around the world) for a number of countries.