I downloaded some PDFs for learning japanese like years ago now, theyre mainly grammar-focused ones, and i went back and found them so that I could put them here and other people would know about them. I'll put any more resources i find online into this thread too
Japanese the manga way - https://archive.org/details/japanese-the-manga-way/mode/2up
Tae kim's guide to japanese - http://www.guidetojapanese.org/jp_grammar_guide.pdf
Japanese the manga way - https://archive.org/details/japanese-the-manga-way/mode/2up
Tae kim's guide to japanese - http://www.guidetojapanese.org/jp_grammar_guide.pdf