Read introduction to all of them. Choose any one of them. They are all self-sufficient.
- Tofugu Guide to Japanese
- Tae Kim's Guide to Japanese
- Refold Guide to Japanese
- r/LearnJapanese Guide to Japanese
- ToKini Andy
- Japanese Ammo with Misa
- Onomappu
- Namasensei's Japanese Course
- Japanese from scratch
- Game Gengo Japanese
- Japanese 101
π± - iOS version available
π΄ - app requires payment
- Anki Flashcards π±
- Memrise π±
- Japanese Kanji Study π΄
- Satori Reader π΄π±
- Tobo Learn Japanese Vocabularyπ±
- Renshuu π±
- HiNative π΄π±