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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. Record once, auto-generate transcript, clips, show notes, and social posts. riverside.com Tool · How Founders Use AI Riverside AI: Turn One Recording Into Clips, Posts, and Blogs Riverside
  2. 350+ episodes entirely about repurposing, now heavily AI-focused. podcasts.apple.com Podcast · How Founders Use AI The Content 10x Podcast Amy Woods
  3. How AI changes which formats you repurpose into and why. podcast.nealschaffer.com Podcast · How Founders Use AI Generative AI Search & Content Repurposing with Amy Woods Neal Schaffer & Amy Woods
  4. Video · How Founders Use AI 10x Your Marketing With These AI Workflows Kieran Flanagan (HubSpot)
  5. Feed it a YouTube link or PDF, get platform-specific drafts everywhere. blotato.com Tool · How Founders Use AI Blotato Sabrina Ramonov
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. Extracts specific patterns, not vague adjectives, from your samples. aiprompthackers.com Article · How Founders Use AI 8 Prompts That Teach AI Your Writing Voice Without a Style Guide AI Prompt Hackers
  12. A simple three-file setup (voice, audience, output) that travels between chats. donbarger.com Article · How Founders Use AI Give Claude Your Voice: The Three-File Writing System Don Barger
  13. Upload 8 samples and get a managed, team-wide brand voice layer. jasper.ai Tool · How Founders Use AI Jasper Brand Voice Jasper
  14. Video · How Founders Use AI The Ultimate Guide to Brand Voice on Jasper AI Jasper community
  15. Paste 3,000 words of your writing, get a selectable voice in every chat. copy.ai Tool · How Founders Use AI Brand Voice by Copy.ai Copy.ai (now part of Fullcast)
  16. Keep ideas and voice yours, use AI for speed, polish, and scale. mattgiaro.com Article · How Founders Use AI Writing (And Creating) Content With AI Matt Giaro
  17. Counterintuitive but right: train AI on your published output, not raw notes. mattgiaro.substack.com Article · How Founders Use AI Why I Stopped Training AI on My Notes (And What I Do Instead) Matt Giaro
  18. Voice-true threads: what to feed the model and what to rewrite yourself. mattgiaro.com Article · How Founders Use AI How to Write X Threads with AI (Without Sounding Like a Robot) Matt Giaro
  19. Structured course on making AI your digital writing assistant, voice included. startwritingwithai.com Course · How Founders Use AI Start Writing With ChatGPT Nicolas Cole & Dickie Bush
  20. Feed a craft book to AI and turn it into a personal writing meta prompt. x.com Thread · How Founders Use AI Dan Koe on feeding books to AI as voice and craft context Dan Koe
  21. Video · How Founders Use AI Nicolas Cole on Writing With AI & Limiting Beliefs of Writers Future of Learning & Work Podcast
  22. Hands-on tested overview of the current text, image, and video leaders. zapier.com Guide · How Founders Use AI The 21 Best Generative AI Tools Zapier
  23. The one-stop design suite most non-designer founders should start with. canva.com Article · How Founders Use AI Introducing Magic Studio: The Power of AI, All in One Place Canva
  24. Script to avatar video in 175+ languages, no camera required. heygen.com Tool · How Founders Use AI HeyGen HeyGen (Joshua Xu)

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The hubs

Starting Up Find an idea, validate it, build, and land your first customers. 1046 questions GTM Go-to-market, from breaking in to how the best teams do it. 352 questions D2C Building a direct-to-consumer brand, India-first. 482 questions Wealth Paying yourself, ESOPs, secondaries, and de-risking founder wealth. 154 questions How Founders Use AI How founders actually put AI to work, mapped topic by topic. 278 questions Glossary Plain-language definitions of the startup and VC terms you'll hit. 390 terms
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