Learn the basic grammar like how subject and verb are usually switched. Then learn how the language works, such as how a sound is a character. Then memorize the whole alphabet and you're set. :)
Guess that's easier said than done. I'm lucky I grew up around the Japanese language. :D
Actually considering English is not only a SVO language but one that it is extremely idiomatic and legalistic, it requires much more than just reading books for a native English speaker to learn. Also if you study a language completely through print materials, you'll have zero listening comprehension because you won't be used to listening for Japanese.
Watch a lot of anime, listen to a lot of music, and play a lot of video games as you study to learn the way talk in Japanese.
Stocking! translate this!
何気ない日常がさよならを告げ
僕らの掛替えのない日失われてた
太陽隠す霧雨 光を奪い
信じるもの無くしてた僕は悩み だけど
It's time to say goodbye to our casual everyday life.
Our irreplaceable day was somehow lost.
This drizzling fog hides the sun and steals the light.
I was lost, with nothing left to believe in.
What is this a song?

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