7:35
How Duolingo Turned a Free Language App Into a $7.7B Business | WSJ The Economics Of
32:22
How to Get and Evaluate Startup Ideas | Startup School
18:10
How I Built a $1 Billion Start-Up Called Misfits Market
43:03
Bill Gates, Satya Nadella & Steve Ballmer on Microsoft in the AI Era | The Circuit with Emily Chang
13:05