John Henry, 23, is running a non-profit business accelerator in New York City called Cofound Harlem.

Henry describes how he got his start in business as an 18-year-old doorman, how he sold his first company, and some of the entrepreneurship lessons he’ll be sharing in a new podcast.

Henry: Cofound Harlem was initially going to be a once-a-month meetup for productive, thoughtful people in Harlem who were interested in startups.

Adams: What benefits do you give the companies in Cofound Harlem?

Henry: I used to doorman for a lot of them, including the founders of Rap Genius, who raised $40 million for their company, which crowdsources annotations to songs.