I've been studying Japanese on and off for the better part of 4 years now. In that time I've tried a lot of methods, gone about it a lot of ways, and have learned alot about language learning in general. I am nowhere near 'fluent', a word I feel is tossed around way too lightly. In fact, my Japanese speaking abilities are novice at best. That being said, I have experience, and I do feel quite 'comfortable' dealing with Japanese. For those who are starting off learning a language, or for those who have hit a 'wall', this is for you.
1. For starters, go through a solid audio course.
The best way to start learning a language is learning how to speak it. Speech preceded written language by many thousands of years, and it is the foundation on which all grammar and letters are based. Going through an audio course will give you a solid foundation on the general patterns/sounds/rhythm of a language, while giving you the great satisfaction of actually being able to speak it! Win win! For Japanese I recommend Pimsleur, and im sure this forum could recommend even more.
2. While you are doing this, listen to native material
Audio courses aren't generally designed to take up most of your time. Pimsleur, for example, recommends a lesson a day (30 mins). What do you do for the rest of your time? Watch/listen to something!! Anything! Watch a Jdrama, a movie, listen to the news or a podcast, but expose yourself to native Japanese a little bit each day. If your time is limited, a lesson of Pimsleur and an anime episode of choice will run you only an hour. Not bad! Make sure it is *active* listening. Passive isnt bad, but I am of a firm belief learning should be done actively. Watch, pay attention, and repeat words you hear to work on your pronunciation. Not every word, but just like a kid, whatever word *speaks* to you.
3. Once you've completed your audio course, work your way through a Grammar course to develop reading/writing skills.
Many would disagree with me on this, but its not something I would budge on. Grammar is important, regardless of what anyone tells you. You don't need an in-depth understanding of it, but you do need to know it. Grammar wont help you speak, but it does help you *understand* what you *read*. If you plan on being *literate*, then learning grammar is unavoidable. Look for a course that is heavily weighted towards grammar study. You can either sign up for a class, or buy a textbook. Again, the forums can help you with this. Learn to read and write Hiragana, Katakana, and Kanji while working through the book. A good course will *teach* you this with its grammar. No romaji textbooks. A good example is "An Introduction to Modern Japanese".
4. As you work through your textbook(s) of choice, do not neglect native media
Continue with your habit of watching/listening to native material after you finish studying for the day. Do not be shy about repeating things you hear. Children do this all the time after all; they repeat words without really knowing what they mean. What words/phrases you repeat is up to you, but keep in mind this is just to keep you listening and speaking. Its practice, so don't get hung up on trying to understand everything. Just enjoy it..like a kid. You'll be surprised at what you will learn. I recommend tv shows/movies over other things because visual context helps a ton. Your brain will remember it as you repeat whatever word/phrase you chose.
5. Upon completion of the textbook series, its all you from here.
This is the hardest part. At this point, I recommend tackling native material almost exclusively. With a great foundation in reading/writing/speaking/listening, you should be ready. This means read a lot of books/stories/news articles and watch a lot of tv. Do not worry about SRSing anything, memorizing new words, or any of that business. Any word worth remembering will show up enough times in your reading/media that you wont forget it. Just expose yourself to a lot of stuff..and keep reference materials handy any time you run into a new word/new grammar construction you don't understand. Look it up, understand it, reread the sentence and move on. If your goal is to learn the language, no need to SRS anything. Just expose yourself, and learn as you go.
6. What about Kanji?
How much Kanji you learn to write will be a personal decision. If you plan on living in Japan, I think it is your duty to assimilate as best you can into the culture that is "tolerating" you. This means learning how to write as many Kanji as you can. There's just no excuse to NOT learn, as it is only *respectful* to the people that have agreed to let you stay within their borders. Its just rude to not learn. Now if you have no intention on living in Japan, I wouldn't say its required. Writing Kanji does help you remember words better, so I'd recommend it. Once you finish your textbook, I'd include daily writing practice because it really does *help* you understand the language. Trust me.
7. Why no SRS?
This is a controversial subject, but I do not believe word lists help you in any way shape or form. A list is just that... a list. It doesn't make words readily available for speaking, and even if you do sentences it doesn't make those available either. The only reason I'd SRS anything is to study for a test. So if you plan on taking JLPT, SRS is basically a requirement. If you are not doing JLPT, skip the SRS as you'll learn faster without it. After all, before SRS there was the "book". If you read a lot of books (few do), you will learn a lot of words. I owe a lot of my success in college to the fact that I read tons. My strong English vocabulary never came from flashcards, but by seeing the same words in different places over and over and over and over again.
8. This is just advice
This is not THE way to learn a language, just advice based on experience. I can tell you that if you do anything for long enough, you will learn. It is inevitable that you'll learn. Learning, however, does require some structure, and that's where the advice comes in. How you structure your learning will be entirely up to you. There are a billion roads that lead to Rome, so the important thing is to find what works for YOU.
In closing, this is just really something to help the beginners out there. If you are an advanced learner, none of this will really help you, though it might provoke some thought.
1. For starters, go through a solid audio course.
The best way to start learning a language is learning how to speak it. Speech preceded written language by many thousands of years, and it is the foundation on which all grammar and letters are based. Going through an audio course will give you a solid foundation on the general patterns/sounds/rhythm of a language, while giving you the great satisfaction of actually being able to speak it! Win win! For Japanese I recommend Pimsleur, and im sure this forum could recommend even more.
2. While you are doing this, listen to native material
Audio courses aren't generally designed to take up most of your time. Pimsleur, for example, recommends a lesson a day (30 mins). What do you do for the rest of your time? Watch/listen to something!! Anything! Watch a Jdrama, a movie, listen to the news or a podcast, but expose yourself to native Japanese a little bit each day. If your time is limited, a lesson of Pimsleur and an anime episode of choice will run you only an hour. Not bad! Make sure it is *active* listening. Passive isnt bad, but I am of a firm belief learning should be done actively. Watch, pay attention, and repeat words you hear to work on your pronunciation. Not every word, but just like a kid, whatever word *speaks* to you.
3. Once you've completed your audio course, work your way through a Grammar course to develop reading/writing skills.
Many would disagree with me on this, but its not something I would budge on. Grammar is important, regardless of what anyone tells you. You don't need an in-depth understanding of it, but you do need to know it. Grammar wont help you speak, but it does help you *understand* what you *read*. If you plan on being *literate*, then learning grammar is unavoidable. Look for a course that is heavily weighted towards grammar study. You can either sign up for a class, or buy a textbook. Again, the forums can help you with this. Learn to read and write Hiragana, Katakana, and Kanji while working through the book. A good course will *teach* you this with its grammar. No romaji textbooks. A good example is "An Introduction to Modern Japanese".
4. As you work through your textbook(s) of choice, do not neglect native media
Continue with your habit of watching/listening to native material after you finish studying for the day. Do not be shy about repeating things you hear. Children do this all the time after all; they repeat words without really knowing what they mean. What words/phrases you repeat is up to you, but keep in mind this is just to keep you listening and speaking. Its practice, so don't get hung up on trying to understand everything. Just enjoy it..like a kid. You'll be surprised at what you will learn. I recommend tv shows/movies over other things because visual context helps a ton. Your brain will remember it as you repeat whatever word/phrase you chose.
5. Upon completion of the textbook series, its all you from here.
This is the hardest part. At this point, I recommend tackling native material almost exclusively. With a great foundation in reading/writing/speaking/listening, you should be ready. This means read a lot of books/stories/news articles and watch a lot of tv. Do not worry about SRSing anything, memorizing new words, or any of that business. Any word worth remembering will show up enough times in your reading/media that you wont forget it. Just expose yourself to a lot of stuff..and keep reference materials handy any time you run into a new word/new grammar construction you don't understand. Look it up, understand it, reread the sentence and move on. If your goal is to learn the language, no need to SRS anything. Just expose yourself, and learn as you go.
6. What about Kanji?
How much Kanji you learn to write will be a personal decision. If you plan on living in Japan, I think it is your duty to assimilate as best you can into the culture that is "tolerating" you. This means learning how to write as many Kanji as you can. There's just no excuse to NOT learn, as it is only *respectful* to the people that have agreed to let you stay within their borders. Its just rude to not learn. Now if you have no intention on living in Japan, I wouldn't say its required. Writing Kanji does help you remember words better, so I'd recommend it. Once you finish your textbook, I'd include daily writing practice because it really does *help* you understand the language. Trust me.
7. Why no SRS?
This is a controversial subject, but I do not believe word lists help you in any way shape or form. A list is just that... a list. It doesn't make words readily available for speaking, and even if you do sentences it doesn't make those available either. The only reason I'd SRS anything is to study for a test. So if you plan on taking JLPT, SRS is basically a requirement. If you are not doing JLPT, skip the SRS as you'll learn faster without it. After all, before SRS there was the "book". If you read a lot of books (few do), you will learn a lot of words. I owe a lot of my success in college to the fact that I read tons. My strong English vocabulary never came from flashcards, but by seeing the same words in different places over and over and over and over again.
8. This is just advice
This is not THE way to learn a language, just advice based on experience. I can tell you that if you do anything for long enough, you will learn. It is inevitable that you'll learn. Learning, however, does require some structure, and that's where the advice comes in. How you structure your learning will be entirely up to you. There are a billion roads that lead to Rome, so the important thing is to find what works for YOU.
In closing, this is just really something to help the beginners out there. If you are an advanced learner, none of this will really help you, though it might provoke some thought.
Edited: 2012-12-25, 5:31 pm

(With wonderfully varied results).