1.Find the right booksThere are loads of terrible Japanese text books. Look for books written by native Japanese speakers or people who've lived much of their life in Japan.
The best books explain Japanese language concepts directly without trying to relate it to English examples or English grammar.
Avoid books that focus on travel Japanese.
2. Learn Characters FirstThe faster you learn Japanese characters the better. At least learn Katakana and Hiragana right from the start.
3. DrillFind a website, game or app that allows you to drill for hours in a way that's not too boring.
4. Become a OtakuIf you get into Japanese pop culture such as movies, music, anime and manga it can help you to learn much faster. Just realize that no one really speaks like they do in a manga.
Japanese dramas are the fastest passive way to learn Japanese. The language in dramas is natural. The stories are so simple that you can almost understand them without sound.
5. Go to JapanIt's a lot harder to learn Japanese sitting in Ohio.
6. Get Japanese FriendsThe more time you can spend with native speakers the better. Chat online.
7. Be Fearless and PersistentLearning language can be embarrassing — you'll make plenty of mistakes. Most Japanese people can speak English. When they hear your bad Japanese they'll speak English. Never fall back on English — persist with your Japanese no matter how bad it is.
8. StudyLearning Japanese (even the fast way) requires about 2000 hours of study.
9. Take the JLPTA test is a important motivation. The Japanese Language Proficiency Test pits your Japanese skills against all the students of Japanese in the World. It's an important challenge for you to conquer.