What's the difference between volumes I, II and III?. Are they different parts of a whole series that covers everything from basic to advanced Japanese grammar (like you would expect from the titles) or are they just different editions each volume covering everything from the previous one?.

They're separate books that do not duplicate entries.

@Turvy I would recommend you get beginners and intermediate and study them. I would then reccomend mastering the anki for both books and then mastering the 8547 Anki deck. I would then go to reading everything you can. I am not going to post any more patents on here until my Japanese grammar is any way near where I want it.

Pages 612-618 of Makino and Tsutsui's a dictionary of basic Japanese grammar and pages 55-77 of the intermediate are the best grammar explanations I have ever read and I can legally send them you if you want.

Or you can use the dictionaries as... dictionaries... to look up grammar points in connection to the material you're reading and get a deeper understanding.

[Zgarbas]

They do have a few duplicates per se, but mainly because vol I covers basic usage of it, vol II intermediate usage and vol III advanced usage. No need to throw a gazillion uses at a beginner and all.

Sorry for the bump.

I was wondering if there is an Anki deck somewhere for the DoIJG grammar points as there is one for the Basic entry? It's been a great help for me to review the grammar while going through the sentence deck.

[Zgarbas]

There is . It's called "8547 Japanese Sentences - from the 日本語文法辞典"

Downloaded it now. Oh wow, this deck is heaven sent! Thank you!