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In my study, I found Elad Gil to be one of the most successful angel investors. He has made investments in twenty-four billion-dollar companies—including Airbnb, Airtable, Brex, Coinbase, Gusto, Instacart, Opendoor, Pinterest, Stripe, Square, and Wish—most in the seed or series A stage. Before
Ali Tamaseb • Super Founders: What Data Reveals About Billion-Dollar Startups
Lenny Rachitsky • Choosing Your North Star Metric
Jordan McAuley
@jmcauley
Founder of Contact Any Celebrity & CELEBRITY / PR. Author of ‘Celebrity Leverage’ and ‘The Celebrity Black Book” (Amazon). Featured by The 4-Hour Workweek, AMEX Open, BBC, Fast Company, Forbes, The Guardian & more.
Andrew Chen’s blog Futuristic Play is one of the best sources for thoughts on viral marketing, startup metrics, and design: http://andrewchenblog.com/
Eric Ries • The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses

Invest like the Best • Building & Investing in Marketplaces
A niche business will market to its niche and no one else.
Arvid Kahl • Zero to Sold: How to Start, Run, and Sell a Bootstrapped Business
Which product out of that suite of products do you want to focus on, to either make a great version of it or a version that solves one of their problems?