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. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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)
  17. A whole show of operators pressure-testing AI marketing tactics on real budgets. podcasts.apple.com Podcast · How Founders Use AI AI DTC WTF podcast Foxwell Digital
  18. Context on the product launch that made avatar UGC mainstream. medium.com Article · How Founders Use AI HeyGen Launches AI-Powered UGC Ad Avatars Ada Gao (Medium)
  19. Budget alternatives from free to $19/month for pre-revenue founders. shhots.ai Article · How Founders Use AI Arcads AI Alternatives: 13 Cheaper UGC Ad Tools Shhots AI
  20. Real examples of AI-actor ads carrying serious revenue, straight from the Arcads founder. open.spotify.com Podcast · How Founders Use AI $200K/mo with ONE AI Ad The Startup Ideas Podcast (Greg Isenberg)
  21. A blunt audit of which Advantage+ modules to enable and which to override. get-ryze.ai Article · How Founders Use AI Meta Advantage+ in 2025: The Automation That Works (And the Parts That Don't) Ryze AI
  22. Exactly the control-vs-automation tradeoff founders worry about, mapped setting by setting. clickguard.com Article · How Founders Use AI The Marketer's Guide to Meta Advantage+: Mastering Automation Without Losing Control ClickGUARD
  23. A complete reference for the inputs-in, execution-out philosophy of Advantage+. bir.ch Article · How Founders Use AI Meta Advantage+ Guide: Features, Tools, Optimization Birch
  24. The most trusted independent Meta ads analyst decodes the retrieval engine change. jonloomer.com Article · How Founders Use AI Meta Andromeda: What It Means for Your Ad Strategy Jon Loomer

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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