Fluent in Spanish Thanks to Duolingo? My Experience and Final Verdict.
A Linguist explains how to make duolingo actually work
How I Became Fluent in Spanish...FAST (self taught)
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I did Duolingo for 2000 days in a row
Polyglot Answers Reddit Language Learning Questions
looks like you missed your spanish lesson today
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Rosetta Stone vs Duolingo Review (Which Is Better?)
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Why I'm Quitting the Japanese Duolingo Course (An Honest Review)
Stop PRETENDING that Duolingo works.