I know a little bit. I use to go to Japan twice every year for about 5 years. Speaking I'm all right at. Reading I can get by. Writing I am horrible at. And don't get my started on kanji. I think I recognize like 4 symbols.
Uh. It really depends on how you learn.
1.) If you're more a hands on person like me, then reading Japanese books/manga and try to make it out there for longer than 2 weeks is the best way. If you know anyone over there, then that'll help a lot.
And when you do go, venture out alone. Just try to remember a few key phrases in order to let people know what language you natively speak as well as the regular stuff. Where is the bathroom? Help! Where is the nearest train station? Thank you. You're welcome.
Good bye. Pleasure to meet you. Etc.
2.) If you just want to increase your knowledge over a while then I'd suggest sticking with anime and trying out some kid manga. A romaji book would help your speaking ability tremendously as well. I read
Doraemon, Anpaman and a few other children's animes. There are also some simple adult themed anime. Biggest thing is to likely not try to tackle Katakana as well as Kanji head on. Once you learn Hiragana, Katakana isn't too difficult. Children manga is almost
entirely made up of Hiragana. Eventually try to tackle some more difficult books like Bakemonogatari, Bungaku Shoujo or Katanagatari.
E.G. In this page alone I only count 5 kanji.
E.G. Bakemonogatari or Katanagatari. They have wonderful stories as well as memorable characters. And NisioisiN loves kanji word play. So the use of kanji is very excessive. This is a very advanced type book. Something likely equivilent to our, 'Tale of Two
Cities'. I'll take a photo of the book when I get home. I have the first two Bakemonogatari's so you can easily see how complex they are. So complex that I've owned them for two or so years and have not even finished one of them yet. haha... ha.... sad.
-- Ok here is what it looks like for an advanced book that's anime related --
Bakemonogatari Vol. 1
3.) You could always do the Rosetta Stone program as well. There is a system they have which will let you study Japanese for $19.99 a month. The course is entirely online, but you learn at your own pace. So
you get out of it, what you put into it. It is the full Rosetta Stone experience, just all through your browser.
When I get home tonight I'll upload links for the books that I used to help me survive over there.
BONUS!!! Also, though it translates phrases horrendously, Google Translate doesn't hurt. At least when it comes to word translations. Learn the grammar for Japanese and you can likely figure out the rest of
it.
I'm not a good teacher, nor am I an expert in anything Japanese. Actually far from it. But I do have a LOT of mileage in Japan as well as many friends who are native speakers. So I'll do what I can to help.