I kicked off learning it with Genki textbook, you can shit on it all you want for conventional grammar explanations, but it's greatly tailored for total novices in the way that it hand holds you to level up to at least pre-intermediate (although it would be better to practice the language outside of the material in the book of course), took me about 3 month to cover all of the main studying course, the workbook, 300 something kanji (learned just to recognize them though, not to draw), and the reading/writing section, My anki card count had been at around 3000 by the time I finished. Now I'm 4 month in, and there's still nothing much to brag about of course, but I think I'm on the right track, I'm subscribed to many youtubers, bookmarked a lot of sites and forums that teach Japanese, and pirated a ton of scanned books and dictionaries and whatnot, there's so much content and lessons to go from, it's just a blessing living in the digital era and having unlimited time on my hands.
I'd say learning a new language is a very fulfilling experience and a good change of pace from jerking off and shitposting all day in my neet life. I with full confidence say that I pretty much don't want anything else from my life other than Japanese, all the content that I like is being produced in it, all the things and people I'm interested in is in it. there's literally no excuse not learn it all day every day, if I only I didn't get sidetracked by being hooked up to some video games again in the last few weeks, but I'm sure this phase won't drive me off my goal of course, mastery of Japanese is the only thing I could call a dream, without which everything else would seem like a waste.