Considering every startup confronts this question at some point, I was surprised by how little has been written about it. Particularly anything actionable. So I decided to do my own digging. I spent the past month personally reaching out to founders, scouring interviews, and tapping the Twitterverse. Below, you’ll find first-hand accounts of how essentially every major consumer app acquired their earliest users, including Tinder, Uber, Superhuman, TikTok, Product Hunt, Yelp, and over...