Dennis Crowley is a co-founder of Foursquare. If you don’t know what that is, Google it – it’s one of the hottest technology companies on the planet right now.
Dennis sold his first company, Dodgeball, to Google in 2005. He’s also been named one of Fortune Magazine’s “40 under 40″ rising stars.
I met Dennis at the LeWeb conference in Paris, and asked him to do a quick video to share the thing he wishes he’d learned when he was younger. Watch the video to see it all, but in short: he wishes he’d learned that you can start your own thing, rather than joining a company.

