Rosetta stone will teach your vocab, albeit slowly, but it's terrible for learning grammar. By the end of the 1st level, you'll only know how to say "The ___ is ___ the ___" You'll surprise and amaze your new Japanese friends with quips such as "The girl is riding the horse!"
Oh! I wish I was in the land of Ramen
Otaku there are not downtrodden
Kawaii! Kawaii! Kawaii, Desu Ne!
MAXIMUM VIPER
Defender of the Scholar, Scourge of the Otaku, Savior of Japan