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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. Three operators running big DTC budgets share exactly how lean AI-era teams are structured. podcasts.apple.com Podcast · How Founders Use AI Marketing Operators podcast Cody Plofker, Connor MacDonald, Connor Rolain
  2. How small DTC teams cut video production costs ~60% while scaling YouTube spend. adgpt.com Article · How Founders Use AI YouTube Ads AI: Scale DTC Creative Without Fatigue AdGPT
  3. Compares the analysis layer of the stack: Motion, Foreplay, Atria and more. tryatria.com Article · How Founders Use AI 7 Best AI Ad Tools for Creative Analysis in 2026 Atria
  4. Turns saved ad inspiration into storyboarded briefs your editor or AI tool can execute. foreplay.co Tool · How Founders Use AI Foreplay AI Briefs Foreplay
  5. Frames why founders should rebuild marketing around AI workflows, not headcount. x.com Thread · How Founders Use AI Vibe coding transformed dev cycles; vibe marketing is next Greg Isenberg
  6. All workflows, prompts, and tools in one 30-minute crash course. x.com Thread · How Founders Use AI The COMPLETE guide to MARKETING with AI (vibe marketing 101) Greg Isenberg
  7. The literal tool list a well-known operator runs, useful as a starting template. gralio.ai Article · How Founders Use AI Greg Isenberg's vibe marketing software stack Gralio
  8. Practical picks segmented by team size, including solo-founder-friendly options. marketerhire.com Article · How Founders Use AI Top 12 AI Marketing Tools Every Marketer Needs MarketerHire
  9. Explains the convergence of agents, automation tools, and cheap custom software. ecommerce-ai.beehiiv.com Article · How Founders Use AI The Rise of Vibe Marketing: How AI Is Reshaping the Marketing Landscape Ecommerce AI newsletter
  10. A skeptical unpacking of the trend so you adopt the substance, not the hype. themarketingnewsletter.org Article · How Founders Use AI Vibe Marketing Uncovered The Marketing Newsletter
  11. One of Google's first 500 employees on which PPC tools and skills survive the AI shift. optmyzr.com Article · How Founders Use AI The PPC Pioneer's Playbook: Fred Vallaeys on What Changed and What Still Matters Optmyzr
  12. Covers the Meta-specific layer of the stack once you outgrow the basics. adlibrary.com Article · How Founders Use AI Meta Advertising Tools: The 11 Best for Scaling in 2026 AdLibrary.com
  13. The vendor's own end-to-end recipe: script structure, avatar choice, and export specs. community.heygen.com Guide · How Founders Use AI The Ultimate Guide to Creating AI UGC Ads with HeyGen HeyGen
  14. A practitioner walkthrough focused on making avatar ads read as native, not corporate. community.heygen.com Guide · How Founders Use AI How I Create Realistic UGC Video Ads with AI Avatars HeyGen community
  15. Hook-problem-solution-CTA script framework applied specifically to avatar ads. community.heygen.com Guide · How Founders Use AI How to Create Effective Ads Using HeyGen HeyGen
  16. The free-to-try entry point for testing avatar ads before spending a dollar. heygen.com Tool · How Founders Use AI HeyGen UGC Ad Avatars HeyGen
  17. Covers the 175-language localization angle, useful for India-plus-global founders. heygen.com Guide · How Founders Use AI HeyGen for Marketers: Jumpstart Guide HeyGen
  18. Benchmarks on why UGC-style creative outperforms polished brand ads on CPC. heygen.com Article · How Founders Use AI UGC Video Creation with AI for High-Impact Ads HeyGen
  19. An independent hands-on review of the leading AI-actor tool, costs included. fritz.ai Article · How Founders Use AI Arcads AI Review (2025): Create 100s of Winning Video Ads With AI Actors Fritz AI
  20. The clearest head-to-head: Arcads for scroll-native ads, HeyGen for polish and languages. admakeai.com Article · How Founders Use AI HeyGen vs Arcads: Which AI UGC Ad Tool Actually Converts? AdMake AI
  21. Second opinion on the same matchup with batch-testing economics spelled out. playcut.ai Article · How Founders Use AI HeyGen vs Arcads: Which AI Video Tool Wins for You? Playcut
  22. Price-per-video math across all the main tools so you can budget honestly. argil.ai Article · How Founders Use AI Comparing HeyGen, Argil, Arcads, Creatify and Zeely pricing Argil
  23. A wider sweep of the category including cheaper challengers worth testing. adlibrary.com Article · How Founders Use AI AI UGC Video Generators: 9 Best Tools for Ads AdLibrary.com
  24. Jones Road's CEO on where AI UGC quietly hurts brands and what to do instead. foxwelldigital.com Podcast · How Founders Use AI Why AI UGC Is a Trap (And What Actually Works) | Cody Plofker AI DTC WTF (Foxwell Digital)

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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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