How long does it take to learn a language with duolingo?

Related questions

1. What languages are similar to Russian?
2. Is Prague a cheap place to visit?
3. Can you really learn a language with duolingo?
4. Can you actually learn a language while you sleep?
5. How far is Berlin from Prague by train?
6. Can I drink the tap water in Prague?
7. Is Czech and Polish the same language?
8. Does duolingo teach Czech?
9. Can Polish speakers understand Czech?
10. Can you drink in public Prague?

Tags

1. #smoothly
2. #duolingo
3. #language
4. #friend
5. #everyday
6. #timeline
7. #learning
8. #started
9. #tests
10. #minutes
11. #component
12. #where
13. #includes
14. #social
15. #flashcards
16. #german
17. #first
18. #months
19. #platform
20. #progress