tYou wanna learn Japanese, huh. That's a big thing that you're wanting there. Japanese is hard, really hard. I studied it when I was at highschool in evening classes for 2 years. Then I started studying it at university and reaslised that everything I learnt before that was a tiiiiiny drop in the ocean. Then I came to Japan on my exchange year and realised that everything I'd studied in my 2 years of full time university was incredibly insignificantly tiny.
If you really want to do it then go for it. It's fun but it's a pain in the bum too.
1. find a good book. "Minna no nihongo", "Japanese for busy people" etc etc. I used both of these and they were pretty good.
2. Learn hiragana and katakana asap. It's like putting your shoes on before taking your first step.
3. DO NOT try to learn Japanese from Anime. You will learn weird words that no one uses/only samurai use/ only horny high school girls use.
4.
Learn Japanese should be your podcast Bible.
5. Watch this;
YouTube - The Secret to Learning Japanese! Amazing! not only does it have a moral, it's funny too.
Good luck!