Hey! I know many sites, but you should try <a href="https://www.erin.ne.jp/en/">https://www.erin.ne.jp/en/</a> ;. It's the best one, on my opinion (:

I would use japanesepod101.com. They have flashcards, word banks, and a ton of audio lessons. I recently subscribed there myself. They can also email you a "Japanese word of the day". It's a fun site.

Thank you very much Honeyclover !!!

Sugoi usefull !

Livemocha.com 

I learn some Spanish from there, but if yo want to start a course you have to help others first. 

Few good sites to start with:

http://ww8.tiki.ne.jp/~tmath/home/index.htm

http://www.guidetojapanese.org/learn/

http://www.tofugu.com/japanese-resources/

http://www.japanesepod101.com (the free membership is pretty good)