Find & validate your idea

What founders use for find & validate your idea, ranked by how many answers lean on it.

1. Graham names the three things that actually convince investors: formidable founders, a promising market, and (usually) evidence... Paul Graham Essay · ~15 min read How to Convince Investors Paul Graham
2. This is the sharpest short statement of the trade you are weighing: if you bet on a trend before the market exists, the... Chris Saad, Startup Snippets Essay · ~5 min read Being too early is the same as being wrong Chris Saad
3. This is a clean, concrete example of reading a policy change as demand rather than a headache. Instead of treating new rules as... Andreessen Horowitz (a16z) Article · ~15 min read Brazil's Surprising Fintech Tailwind Angela Strange and Flora Oliveira
4. For B2B founders, a signed letter of intent is the cheapest way to turn "this sounds useful" into a costly commitment before... Learning Loop Article Product Experiment: Letter of Intent, What it is, How it Works, Examples Learning Loop
5. This is the sharpest short framework for the exact question: is the problem a nice-to-have (vitamin) or something people are... brianrhea.com Essay · About a 7 minute read Are You Building a Vitamin or a Painkiller? Why Painkillers Always Win Brian Rhea
6. For a two-sided marketplace, the first real decision is which side to define and win first, and this essay makes the case... NFX Essay · Long read (about 25 minutes) 19 Tactics to Solve the Chicken-or-Egg Problem and Grow Your Marketplace James Currier
7. Hoffman and Yeh explain why owning a market densely can beat covering more ground thinly, because network effects and local... Currency (Penguin Random House) Book · 336 pages Blitzscaling: The Lightning-Fast Path to Building Massively Valuable Companies Reid Hoffman and Chris Yeh
8. Janz's animals framework (mice, rabbits, deer, elephants, whales) reframes the whole niche question around one thing: what does... The Angel VC (Christoph Janz, Point Nine Capital) Essay · Long essay, roughly 15 to 20 minutes Five ways to build a $100 million business Christoph Janz
9. This is the deepest practical treatment of pulling the job out of a customer's behavior rather than their words. Moesta... Lioncrest Publishing Book · About 220 pages Demand-Side Sales 101: Stop Selling and Help Your Customers Make Progress Bob Moesta and Greg Engle
10. This widens the question from data and code to the real issue: what does it mean to build your livelihood on ground you do not... Medium (Ryan Frederick) Essay · 6 minute read Building On Someone Else's Platform Ryan Frederick
11. This is the plainest, most credible list of the traps that keep founders from their first customers, written by the people who... Y Combinator Startup Library Article Biggest mistakes first-time founders make Y Combinator (Michael Seibel)
12. When you are the only one selling something like your product, cost-plus and competitor benchmarks give you nothing to anchor... Wiley (2016) Book · Book, ~240 pages Monetizing Innovation: How Smart Companies Design the Product Around the Price Madhavan Ramanujam and Georg Tacke
13. Most first 100 users advice is vague. This piece is the opposite: it groups the real cold start tactics into seven concrete... Lenny's Newsletter Article · About a 15 minute read How the biggest consumer apps got their first 1,000 users Lenny Rachitsky
14. This is the canonical source of the ship-ugly-first idea, the LinkedIn co-founder's own essay behind the line about being... LinkedIn Essay · About a 6 minute read If There Aren't Any Typos In This Essay, We Launched Too Late Reid Hoffman
15. A business built on a few big enterprise deals quietly builds a trap: if one account walks, your revenue caves. This piece... Lighter Capital Essay How SaaS Startups Can Minimize Customer Concentration Risk Lighter Capital
16. Most startup books assume you want to raise, hire, and scale, which quietly pressures you to quit early and go big. Jarvis... Penguin Books Book · ~272 pages Company of One: Why Staying Small Is the Next Big Thing for Business Paul Jarvis
17. This is the sharpest short answer to the real fear behind the question: how do I not go broke funding this. Graham reframes the... paulgraham.com Essay · ~1,200 words, about a 6 minute read Ramen Profitable Paul Graham
18. This nails the discipline behind the highlight reel: with prospects you share momentum factually without handing over what they... Lenny's Newsletter Article · 20 min read Raising a seed round 101 Lenny Rachitsky with First Round
19. This is the cleanest map of the three ways co-founders actually decide things: consensus, functional expertise (your domain,... edbatista.com Essay · 12 min read On Co-Founder Decision-Making Ed Batista
20. This is the primary source, not a blog summary of it, and it does both jobs your answer needs in about two pages: the one-way... Amazon (aboutamazon.com) Essay · 12 min read 2016 Letter to Shareholders (High-Velocity Decision Making) Jeff Bezos
21. This is the exact playbook behind our answer. Executive coach Rachel Lockett prescribes a cadence of relationship-only meetings... First Round Review Article · ~20 min read Renew Your Co-Founder Vows, and Other Tactics for Strengthening the Most Important Relationship in Your Startup Rachel Lockett (via First Round Review)
22. Graham's answer to "how do I plan when I can't know what's coming" is to stop treating the future as knowable at all. He argues... paulgraham.com Essay · ~10 min read How to Be an Expert in a Changing World Paul Graham
23. This is the framework for acting decisively without certainty. Duke, a former pro poker player, teaches founders to judge the... First Round Review Article · ~20 min read The Tactical Guide to Making Better Decisions When Starting and Scaling Companies Annie Duke (via First Round Review)
24. Graham dismantles the exact objection you are facing: the fear that quitting is reckless. His move is to treat your family's... paulgraham.com Essay · 25 min read Why to Not Not Start a Startup Paul Graham

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