Explore · The library

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 worked example with the actual prompts and outputs shown. medium.com Article · How Founders Use AI How to Use ChatGPT to Create a Financial Forecast: Example & Guide Selma Khayal
  2. Break the model into revenue build, schedules, and working capital, one prompt each. thebricks.com Guide · How Founders Use AI How to Build a Financial Model with ChatGPT Bricks
  3. A pro SaaS writer names the exact AI tells and how to edit them out. kaleighmoore.com Article · How Founders Use AI Why Your AI Content Sounds Like AI (+ How to Fix That) Kaleigh Moore
  4. The canonical argument for why founders who still write will out-think everyone else. paulgraham.com Article · How Founders Use AI Writes and Write-Nots Paul Graham
  5. Real data showing AI-assisted posts got 22% more engagement, with honest caveats. buffer.com Article · How Founders Use AI Data: Engagement Rate of 1.2 Million AI-Assisted Posts vs. Human-Only Buffer
  6. A creator with millions of followers explains structuring prompts so output stays yours. letters.thedankoe.com Article · How Founders Use AI How to Use AI Better Than 99% of People Dan Koe
  7. An authentic-marketing coach on keeping your humanity while using AI daily. georgekao.medium.com Article · How Founders Use AI How To Write Without Sounding Like AI George Kao
  8. The 80/20 split: automate structure, hand-write voice, stories, and conviction. kokasexton.com Article · How Founders Use AI The Founder's AI Content System: Scale Your Brand Without Sounding Like a Robot Koka Sexton
  9. Survey of 1,000+ marketers: where AI content actually helps and where it fails. blog.hubspot.com Guide · How Founders Use AI The HubSpot Blog's AI Trends for Marketers Report HubSpot
  10. The clearest thinking on which parts of writing you should never outsource. oneusefulthing.org Article · How Founders Use AI Choosing to Stay Human Ethan Mollick (Wharton)
  11. A sharp cultural read on the slop backlash your content must rise above. technologyreview.com Article · How Founders Use AI How I Learned to Stop Worrying and Love AI Slop MIT Technology Review
  12. A 100M-view case study in why taste, not tools, decides what wins. x.com Thread · How Founders Use AI Roberto Nickson on AI slop vs human excellency Roberto Nickson
  13. A five-step repeatable loop for getting expert-level output from any model. threads.com Thread · How Founders Use AI How I've Been Using AI (meta prompt workflow) Dan Koe
  14. The exact one-day-a-week system behind 2.4M followers with zero team. help.blotato.com Guide · How Founders Use AI Sabrina's Social Playbook 2025 Sabrina Ramonov (Blotato)
  15. Why every piece should work in 5 seconds, last 12 months, live on 3 platforms. justinwelsh.me Article · How Founders Use AI The Power of Repeatable Content Justin Welsh
  16. A $10M solopreneur's actual ChatGPT use: hooks, reorganizing, repurposing. justinwelsh.me Article · How Founders Use AI Create Better Content, Faster, with ChatGPT Justin Welsh
  17. The system that means you never start from zero again. justinwelsh.me Article · How Founders Use AI How to Build a 730-Day Content Library Justin Welsh
  18. Content engine plus distribution machine, compressed into one thread. x.com Thread · How Founders Use AI How I'd Build an Audience From Zero in 2025 Greg Isenberg
  19. Why he built a product to turn one idea into dozens of platform-ready assets. rosssimmonds.com Article · How Founders Use AI My Latest Project: Distribution.ai, Putting Content Distribution on Autopilot Ross Simmonds
  20. The voice-as-a-file method from LinkedIn's biggest AI-writing creator. ruben.substack.com Article · How Founders Use AI I Am Just a Text File Ruben Hassid
  21. A copy-paste interview prompt that extracts your voice into a reusable .md file. linkedin.com Thread · How Founders Use AI How to Make AI Write (Exactly) Like You Ruben Hassid
  22. Set up a Claude skill trained only on your best posts, then improve it weekly. ruben.substack.com Guide · How Founders Use AI Claude + LinkedIn Ruben Hassid
  23. The cleanest step-by-step for custom instructions and sample-based training. zapier.com Guide · How Founders Use AI How to Train ChatGPT to Write Like You Zapier
  24. Compress your voice into a portable block that works in any model. promptsdaily.substack.com Article · How Founders Use AI Voice Pattern Prompts: How I Get AI to Write in My Voice From the First Message Prompts Daily

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The hubs

Starting Up Find an idea, validate it, build, and land your first customers. 1327 questions GTM Go-to-market, from breaking in to how the best teams do it. 379 questions D2C Building a direct-to-consumer brand, India-first. 512 questions Wealth Paying yourself, ESOPs, secondaries, and de-risking founder wealth. 165 questions How Founders Use AI How founders actually put AI to work, mapped topic by topic. 360 questions Glossary Plain-language definitions of the startup and VC terms you'll hit. 425 terms
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