well, it depends... if you want to buy the hard cover book it shouldn't be hard to find in stores like amazon or others. but if you prefer a different method or want a PDF version, you can always use Google~
I misspelled the books' name in my first comment... it's "日本語総まとめ 文法" (nihongo sou matome bunpou) N5 (easiest) ---> N1 (Hardest)
(I already bought these books, so please don't misunderstand my use of words above <(^w^)) 頑張ってね!
@jihan19
July 24, 2016 at 5:55pm