> It works well to learn the basics, which means a few thousand words and the core grammar. This is not entirely accurate. The better courses on Duolingo teach

> It works well to learn the basics, which means a few thousand words and the core grammar. This is not entirely accurate. The better courses on Duolingo teach in excess of 7000 words (8000 for french) as can be seen on DuolingoData[1] and clicking on the W column to sort the courses by words taught. Clozemaster is a good resource for vocabulary building if you want to supplement Duolingo.[2] [1] https://duolingodata.com/ https://duolingodata.com/ [2] https://www.clozemaster.com/ https://www.clozemaster.com/