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
📱 - iOS version available
💴 - app requires payment
- Anki Flashcards 📱
- Memrise 📱
- Japanese Kanji Study 💴
- Satori Reader 💴📱
- Tobo Learn Japanese Vocabulary📱
- Renshuu 📱
- HiNative 💴📱