Learning Japan's society, culture, manners, etc.
Japanese Language Learning
Learning Japanese with Shogakukan
Web English-Japanese Dictionaries | 英和・和英 辞典 (ei-wa/wa-ei jiten)
Wiktionary A free-content multilingual dictionary. It aims to describe all words of all languages using definitions and descriptions in English. Includes Japanese words.
Jim Breen's Japanese-English Dictionary
Rikai
English and Japanese learning aid. Includes articles of world news, news from Japan, essays/column, finance, politics, sports, etc., with definitions in English/Japanese. You can paste a URL or block of text into the translator, and it provides the Japanese reading and English translation for words.
Web Encyclopedias | 百科事典 (hyakka jiten)
These are community developed web encyclopedias. Many people can edit anytime. Make sure to verify the information by consulting other sources before citing.