18:27
Cómo aprender cualquier idioma en seis meses | Chris Lonsdale | TEDxLingnanUniversity
19:27
The first 20 hours -- how to learn anything | Josh Kaufman | TEDxCSU
18:14
How to Succeed Without Confidence, Motivation, or Healing | Evy Poumpouras | TEDxAthens
16:27
Breaking the language barrier | Tim Doner | TEDxTeen 2014
21:52