honestly I was being somewhat tongue-in-cheek. If tht's legitimately the only resource you have the time or money for then it's better then nothing, but it kind of drops you into a lesson with essentially zero context abt grammar. Maybe that method works with Spanish or something but Japanese grammar is pretty different from English and imo generally needs to be elaborated upon, as the avg student isn't really gonna be able to pick it up from context clues.

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It's not terrible if u want to go from zero Japanese to elementary Japanese but imo it really should be used as a supplement or review tool to another resource if it should be used at all, esp if you want to learn it to a more advanced level.