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Every resource founders actually use, in one library.

The essays, videos, podcasts, books and tools behind every answer across eChai's hubs, from starting up to go-to-market, D2C, founder money and AI, each with a note on why it is here.

What founders use most, ranked by how many answers lean on it.

  1. A method for finding exactly where your customers already gather online, the forums, subreddits, and groups where they post... Stacking the Bricks Article · ~12 min read · Starting Up How to Find Your Audience's Online Watering Holes Alex Hillman In 2 answers
  2. Campbell has pricing data on thousands of companies, and his core message is that willingness to pay is something you can... Intercom (Inside Intercom) Podcast · Starting Up Patrick Campbell on the Art and Science of Pricing Patrick Campbell In 2 answers
  3. A practical guide to running an early willingness to pay conversation and building pricing around real buyer personas. Good... First Round Review Article · Starting Up The Price is Right: Essential Tips for Nailing Your Pricing Strategy First Round Review In 2 answers
  4. An entire newsletter dedicated to reverse engineering how companies like Uber, DoorDash, and Spotify got their first thousand... Ali Abouelatta (First 1000 newsletter) Article · Newsletter archive, 10 min per issue · Starting Up First 1000 Ali Abouelatta In 2 answers
  5. Real benchmark data from founders on what a waitlist actually converts to paid, so you can calibrate expectations against your... Lenny's Newsletter Article · 10 min read · Starting Up What is good waitlist conversion? Lenny Rachitsky In 2 answers
  6. A clear, short explainer on why asking friends (or anyone) what they want produces false positives, and how to interview for... NYU Entrepreneurship Article · 8 min read · Starting Up Stop Asking What They Want: Why Customer Discovery Is About Problems, Not Products Frank Rimalovski In 2 answers
  7. Your short answer says to track outreach like a funnel, and this gives you a free spreadsheet to do it. Log every contact as... Close.com Template · Downloadable templates · Starting Up Sales Pipeline Templates (Excel and Google Sheets) Close.com In 2 answers
  8. A ready made structure for running and logging customer interviews the Mom Test way, so your manual research is captured... Notion Marketplace (GrowthHacking.World) Template · Notion template · Starting Up Problem-Solution Navigator: A Mom Test Based Interview Template GrowthHacking.World In 2 answers
  9. Free templates including the Positioning Canvas and a messaging document you can fill in for your own product. They turn the... aprildunford.com Template · Downloadable · Starting Up April Dunford Positioning Templates April Dunford In 2 answers
  10. A ready question bank organized by interview stage, so you walk into a customer conversation with real questions instead of... Perspective AI Template · Starting Up 60 Customer Discovery Questions (Mom Test-Approved) Perspective AI In 2 answers
  11. When people love it but will not pay, price is often the real blocker, and this piece walks you through pricing conversations... First Round Review Article · Starting Up Pricing Lessons from Working with 30+ Seed and Series A B2B Startups First Round Review In 2 answers
  12. Your short answer says to ask what would have to be true for someone to pay today, and this book is the toolkit for exactly... Chris Voss Book · Starting Up Never Split the Difference Chris Voss In 2 answers
  13. When you want your old network to open doors rather than just buy, this covers how to ask in a way that respects their time and... Kristina Hu (Hu Knows) Article · ~8 min read · Starting Up How to Ask for a Warm Intro Kristina Hu In 2 answers
  14. Video · ~20 min · Starting Up Solving the Chicken or Egg Problem James Currier In 2 answers
  15. Since supply is usually the side you bootstrap by hand, this is a focused list of 28 concrete ways real marketplaces did it. It... andrewchen.com Article · 15 min read · Starting Up 28 Ways to Grow Supply in a Marketplace Lenny Rachitsky (via Andrew Chen) In 2 answers
  16. This is the famous story of Airbnb flying to New York and photographing listings door to door, the most literal example of... First Round Review Article · 12 min read · Starting Up How Design Thinking Transformed Airbnb from Failing Startup to Billion Dollar Business First Round Review In 2 answers
  17. Video · ~45 min · Starting Up Building Product, Talking to Users, and Growing (How to Start a Startup, Lecture 4) Adora Cheung In 2 answers
  18. IndiaMART is India's largest B2B marketplace, and its founder talks candidly about aggregating supply first (opening 52 offices... Prime Venture Partners Podcast Podcast · ~45 min · Starting Up Bundling & Unbundling, Blitzscaling & B2B Opportunities with Dinesh Agarwal, Founder & CEO IndiaMART Prime Venture Partners In 2 answers
  19. A clear, jargon free explainer of the problem plus practical seeding strategies (single side focus, faking supply,... Sharetribe Marketplace Glossary Tool · 10 min read · Starting Up What Is the Chicken and Egg Problem in Marketplaces? Sharetribe In 2 answers
  20. Hosted by a founder who has built and sold companies in India, this show digs into how Indian founders actually got from zero... YouTube Podcast · 45 to 90 min episodes · Starting Up The Neon Show Siddhartha Ahluwalia In 2 answers
  21. Lenny addresses prioritization specifically for early startups, where the usual scoring frameworks break down and speed matters... Lenny's Newsletter Article · ~15 min read · Starting Up Prioritizing at startups Lenny Rachitsky In 2 answers
  22. Cohen argues the MVP framing pushes founders to ship something too broken to love, and offers an alternative: make it Simple,... A Smart Bear (Jason Cohen) Essay · ~12 min read · Starting Up Your customers hate MVPs. Make a SLC instead. Jason Cohen In 2 answers
  23. The father of customer development argues that your plan survives contact with reality only after you leave your desk and test... steveblank.com Article · 10 min read · Starting Up Teaching Entrepreneurship by Getting Out of the Building Steve Blank In 2 answers
  24. The creator of Shape Up talks through fixing the time and cutting the scope, which is exactly the discipline that keeps an MVP... Lenny's Podcast Podcast · 90 min · Starting Up A Better Way to Plan, Build, and Ship Products (Shape Up) Ryan Singer In 2 answers

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