Duolingo is a free extension with courses in English, Spanish, Portuguese, French, Italian, German, Russian, Swedish, Danish, and more. With Duolingo, you can learn a new language from scratch, with no previous knowledge needed.

In Duolingo, you will learn the vocabulary by interacting with the words in the game. As you learn a new word, its translation, and how to pronounce it correctly, the word will be added to your vocabulary. When you know the words well, you can challenge yourself to speak the words correctly. As you improve your speaking skills, the word will be added to your vocabulary and its translation.