Fargo is useful for English practice if you can already follow natural conversations. With the dialogue moving at a natural rhythm, viewers should catch most of it, although a few moments may still be challenging. Learners will hear plenty of useful natural English, but some lines may still require a second listen. Also, crime scenes may bring in words related to investigations, police or legal vocabulary. Because the plot is fairly straightforward, learners can focus more on the dialogue than on figuring out the story. If your English is close to B1/B2, Fargo can be useful for building vocabulary range.
