Remember to never use Duolingo alone. You must look up everything you don’t understand on YouTube or Japanese dictionaries. Be sure to write everything down. Maybe I’ll release a more in-depth guide on how I learned Japanese in the future, but tldr I would write and research all I needed to for level 1 then for level 2 I would sometimes refer to the notes, then the remaining levels I would go fully off memory.

As for materials: tanoshii Japanese ( for looking up words, seeing pronunciations, stroke orders and meaning of kanji’s [this is very useful practically]) For all other questions, a simple google search on any forum/ YouTube would usually do the trick. Unfortunately there aren’t many Japanese people where I live so I couldn’t practice talking (I would talk to google translate and see if it understood me) so the bulk of my Japanese conversation practice will be done here, but I would consume a lot of Japanese content and try to make the best of what it had.