Here's an immersion method from my friend Trenton (he currently doesn't post because he's not certain of Japan's Visa Regulations). He has great videos on how to learn Japanese!

Introduce yourself! Presentación personal!

Only the essentials....

Send us a voice recording of you trying this tongue twister in Japanese: ブタがブタをぶったのでぶたれたブタがぶったブタをぶった。 buta ga buta o butta node butareta buta ga butta buta o butta