Isn't Japanese one of the hardest languages to learn? I know the grammar stumps me haha. I still have barely gotten into the Kana
I use books most of the time and lots of writing it out. It is working for me... Though having someone to speak it with would help
I think the trick is just really wanting to learn it.
I agree yusuke speaking it is the best way in my opinion but alas I am all alone here with my learning Japanese... haha. Sorry dry humor...
I also would love a learning group or something but I am not to great with lots of people. I do better one on one or with maybe two or three people.