Japanese for beginners
ジャパニーズ・フォー・ビギナーズ

In one hour, one can accomplish a great many things. You can watch 2.5 episodes of anime(skipping the OP/ED), build a very sad tower in Minecraft, or complete Call of Duty's campaign mode.

 

You could also do something more constructive, gaining a basic understanding of how japanese is put together.