If it is well used everyday, it will be naturally memorized. 매일 잘 사용하면 자연히 외울 수 있어요. === 좋은 하루를 지내세요.／I wish you a good day.

https://www.youtube.com/watch?v=vHnXKd5Z_OU https://www.youtube.com/watch?v=K53oCDZPPiw These video are The origin principle of Hangul I think it would be very useful to learn a Hangul 1. ㄱ,ㄴ,ㅁ,ㅅ,ㅇ are modeled on the mouth structure 2. ㅋ,ㄷ,ㅌ,ㅂ,ㅍ,ㅈ,ㅊ,ㅎare made by adding stroke have a nice day~

I used Memrise. As the name implies, it helps you remember, and it's done by spaced repetition.

I think that the best way for that is use laitner box