You’ll learn big stuff (like how to get the most out of your team’s diverse opinions and one leader’s vision), medium stuff (like why your team should spend three straight days with your phones and computers off), and nitty-gritty stuff (like why you should eat lunch at 1 p.m.). You won’t finish with a complete, detailed, ready-to-ship product. But you will make rapid progress, and know for sure if you’re headed in the right direction.