Useful materials

Why Duolingo does not build vocabulary progress

Duolingo is good at building a habit, but games, lessons, and streaks do not automatically move specific words into long-term memory.

A teacher can explain mistakes and grammar, but long-term memory is built only by your repetitions.

A video gives understanding in the moment, but without repetition the material disappears within days.

The repetition system is strong, but you must find decks, configure the process, and maintain discipline yourself.