The common failure is not buying the wrong book. It is buying six books and finishing none.
A working set is small, and the discipline is in using it rather than in choosing it.
What a complete set looks like
- One grammar book for your level. Worked through from front to back, not sampled.
- A spaced-repetition system for vocabulary and kanji. Free, and used every day.
- Past papers or full-length practice papers. Non-negotiable from the halfway point onwards.
- Listening material slightly above your level. Daily.
- Real reading material, from N3 upwards. News, articles, whatever you would actually read.
That is the whole list. Adding a second grammar book does not add anything; it divides your attention and lets you feel productive while restarting the same chapters.
What to be sceptical of
Anything claiming an official list. The JLPT has published no official kanji or vocabulary lists since 2010. Reconstructions are genuinely useful; a product presenting one as official is misrepresenting it, which tells you something about the rest of it.
Question banks with no explanations. A bank of thousands of questions that only marks right or wrong trains you to recognise those questions. The explanation is where the learning is, and its absence is the difference between practice and testing.
Apps that gamify without spacing. Streaks are motivating and streaks are not a review algorithm. Check that the tool actually schedules reviews by forgetting curve rather than by however you feel today.
Anything promising a level in an implausible time. N5 to N2 in six months is not a plan, it is marketing. The honest ranges are wide and they do not include that.
Buying for the level above. Materials for a level you are not yet at feel aspirational and do not get used.
Free versus paid
Almost everything you need is free or nearly free: spaced repetition software, graded listening, kana resources, and a very large amount of reading material in Japanese.
What is genuinely worth paying for, if anything:
- Past papers, where official collections exist for your level.
- Correction. Something or someone that tells you why you were wrong. This is the scarce thing.
- Structure and accountability, if you have tried alone and stopped. That is what a class actually sells, and it is worth being honest with yourself about whether it is what you are missing.
Note that none of those three is information. Information is abundant and free. The scarce goods are feedback and consistency.
The test of whether a resource is working
One question, asked monthly:
Am I actually using it, and can I show a measurable change?
A book at chapter three after two months is not a resource, it is a purchase. Replace the habit, not the book — buying a different one almost never fixes it.
Order of operations
Before you buy anything: sit a full past paper under real timing, at the level you are considering. It tells you your level honestly, it tells you which section is weakest, and it makes every subsequent purchase a decision rather than a guess.
If you are preparing for JFT-Basic rather than the JLPT, free JFT-Basic resources covers the equivalent set, and our free practice test will give you a section breakdown in about fifteen minutes at no cost.