>>98020791there's a thread in /jp/, yes, you can use 4chan for something productive, crazy isn't?
personally I used this website
https://tatsumoto.neocities.org/but now /djt/ is shilling this
https://animecards.site/if you are done with hiragana and katakana, then you should start acquiring vocab (Kanji), you need to install Anki and a good deck to start memorizing words, I used these
https://tatsumoto.neocities.org/blog/ankidrone-decks but there's also many others, being the 2k/6k a popular choice
https://ankiweb.net/shared/decks?search=japaneseonce you are done with level n5 kanjis (or at least most of them) you can start with the grammar, if you like to read use these
https://imabi.org/what-is-japanese/https://gohoneko.neocities.org/grammar/taekimand my favorite
https://sakubi.neocities.org/#part1there's also cure dolly sensei
rip if you prefer yt videos, this is a must watch video
https://www.youtube.com/watch?v=DJ_RKFi7GKU you can also install Rikaitan or Yomitan (an web browser extension that functions as a pop-up dictionary) that way you can look up at words you find on the internet and create Anki cards, and lastly, once you reach n4 and have enough grammar to understand some structures, you need to start immersing, reading novels, manga, games etc, as long as you enjoy it, from those you will build your personal Anki deck, from there is just keep going until you feel satisfied about current level of japanase
jaja si claro basically, it's normal to not understand anything the first months, so don't feel discouraged, eventually everything will start to come together