網上免費學習日語

請參考：
http://www.geocities.com/languageweb/japanese.html（可發聲的，初級至1級日語）
http://study.u-biq.org/

There are a few:

This website is from NHK日本放送協会 (in Simplified Chinese):
http://www.nhk.or.jp/lesson/chinese/index.html

This website is in English (for beginners), you can navigate to different lessons, I am just showing the first lesson here:
http://www.joyo96.org/96K/Lesson_1.html

This is in Simplified Chinese also but have video for you to watch:
http://www.tudou.com/playlist/id/2230708/

This is in Traditional Chinese (for beginning)
http://www.tiao.com.tw/nihongo/nihongo.html

This is in Traditional Chinese (for more advanced studies):
http://mail.scu.edu.tw/~mark/