Learn a language in three days!
An expected misconception from people reading the title, is that I mean it would take exactly three days to learn a language, and that I am about to present the magical formula for this. I apologize for foiling your dreams, but I do not have any magical formula, neither do I know how long it would take you to learn a new language. Unfortunately, the answer to ‘How long does it take to learn a language?’ is only determined by the learner himself.