You don't know a language, you live it. You don't learn a language, you get used to it.
Welcome to All Japanese All The Time (AJATT)! The place to be for information on how to learn a language (Japanese or otherwise), on your own, having fun and to fluency…mostly by taking everything that schools do that sucks and…not doing it. And then doing other stuff, that doesn’t suck, instead. It’s pretty freakin’ genius; you should…you should totally get into it :)