If I read the resources that Bunrpo provided thoroughly and learn from any other resources I could search on Google and Youtube. Is there still any good reason to purchase textbooks like Tobira or AIAIJ?
I like writing the exercises by hand, I think I can remember better, so the exercises in the textbooks and workbooks are helpful. Online resources such as Bunpro and Youtube channels are complements because I want to learn colloquial forms and be consistent.
textbooks are a great resource for a few reasons. It gives you a concrete focus, and consolidates all grammar points into reading passages, questions, and writing scenarios. It helps you also know where you are at. Also when using Bunpro, Tobira, Genki, Minna are referenced with page numbers for some of the grammar points, and you can visit your text book to get a better understanding. I think textbooks help, especially if you know your level, are you going by jlpt? genk1/minna1 is n5, genki 2/minna2 is n4 and tobira or aiaij is n3 I would think. Then going into n2 and n1 probably would have to rely on shinkan zen master, and news articles/novels to practice new words and grammar points.
Yes. I use wanikani + bunpro + anki alongside textbooks, these tools are mostly for quick lessons and taking advantage of the SRS, but having more solid foundation from textbook is better, since its more in-depth.
The Kanzen Master books are really good for learning the differences between similar things. The questions in the books are written to confuse you, so you learn more about the content by researching why your answers are wrong.
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