Angel: How to Invest in Technology Startups—Timeless Advice from an Angel Investor Who Turned $100,000 into $100,000,000

by Jason Calacanis

A first-time founder with an idea written on the back of a napkin is, generally speaking, not deserving of your funding. If you’re a first-time founder, it is your job to build a functioning prototype, or MVP, and hopefully run a beta test.