Richard Simcott, a polyglot who speaks over 50 languages, gives a set of advice on how to study a new language with online apps at home.

https://www.vice.com/en/article/bv8gdm/how-to-learn-foreign-language-at-home

“Language apps often give people the impression of being more fluent than they actually are,” says Richard Simcott, a world-renowned polyglot who has learned over 50 languages. “Language learning is over-learning: you learn something to the point that it just becomes part of who you are, so that it comes to mind without hesitation when you need it.”