iKnow!

I've been spent most of the day studing English today.
I found a useful website which support a self study English.
It says that their applications are based on brain science,
and it helps learners to memorize.
Additionally, they also offer a kind of community
so that users will be encouraged each other.

If you are interested in this, you can try it at:
http://www.iknow.co.jp/

The title is "iKnow!", but I don't know if you like it...