Simple Products That Became Big Companies

Dalton Caldwell and Michael Seibel talk about OpenSea, Gusto, and the importance of building simple products that solve a real problem.  

To create Rookies Mistakes we asked YC founders: Is there a simple fact you wish you knew when you started your company or a rookie mistake you wish you could take back?

Apply to Y Combinator: https://www.ycombinator.com/apply/