>>40213838
nothing is really necessary, if you do enough immersion, you will eventually learn everything (in theory)
theres a large variability between people so some things might work or not for you, just do what you feel you should do and see how it works out for you
you can usually tell what is working and what is not
the most important thing is immersing as much as you can
if you want easy reading google tadoku or hukumusume for graded readers/kids stories, manga1001 for manga, syosetu for short stories, and nyaa for anime and other stuff
library genesis has genki, minna no nihongo and all books on the subject (all books in the world actually), and youtube for vbijin, so just do whatever interests you, every day
the every day part is important, itll take a while no matter what, mind you
good luck anon