@gnu2 I started learning Japanese in formal education, it was optional study. They used Minna no Nihongo (books) as materials in the class. At first, I used to write and learn in romanized Japanese, alphabet/latin letters, then Kana (Hiragana and Katakana). Kana has exact reading, I'd say it's easier to read than English. The most challenging one is Kanji, I learn it from Wanikani.com and Obenkyo (Android App). I have lots of learning materials but mostly served in Indonesian, only one has English version is NHK.or.jp. Many anime have uncommon expressions in daily life, but still a good source. I know the only site we can stream anime with Japanese (Kanji-Kana), romanized Japanese, and English subs at once, but not sure if it's really legal under its fair use (nonprofit, educational purpose).