How do I start interesting in Japanese?
I started from watching Japanese cartoon.
One day, I suddenly found that those background music (soundtrack???) in those Japanese cartoon were great, then I started to find their soundtracks.
How do I really learn Japanese?
After I bought the CDs, I read the lyrics as I listened to the songs. I tried to find out which pronounciation belongs to which character (word), and tried to guess the meaning of the lyrics (because Japanese involves some Chinese characters).
It's quite hard to do. Therefore, I went to the library to borrow some Japanese teaching books.