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. The official breakdown of quality ranking, engagement rate ranking, and conversion rate ranking, the three diagnostics that... Meta Business Help Center Article · D2C About Ad Relevance Diagnostics Meta
  2. Explains what actually drags CTR down before you blame the hook: Meta scores perceived ad quality (withheld information,... Meta Business Help Center Article · D2C About Quality Ranking Meta
  3. The primary source definition of every video metric Ads Manager reports, so when you build a hold rate calculation you are... Meta Business Help Center Article · D2C About Video Ad Metrics on Facebook and Instagram Meta
  4. The clearest global articulation of the exact chain logic in our short answer: it walks through diagnosing which metric broke... Search Engine Land Article · D2C How to Read Meta Ads Metrics Like a System, Not a Scoreboard Akvile DeFazio
  5. Real cross industry benchmark ranges (median CTR near 2.2%, CPM near 14 dollars, up sharply year over year) with the caveat... 27Five Report · D2C Meta Ads Benchmarks for eCommerce (Facebook Ads): ROAS, CPC, CPM and CPA by Industry 27Five
  6. The best explanation available of why blended MER, not campaign level ROAS, should decide whether you scale, with the actual... Common Thread Collective Article · D2C Marketing Efficiency Ratio: How to Find Your Ideal Ad Spend Common Thread Collective
  7. The most concrete, numbers first explanation of hold rate we found: the formula, benchmark bands, and a decision tree for what... Heylect Article · D2C Hold Rate Formula: Calculate % + Benchmarks Heylect
  8. Video · D2C These Facebook Ad METRICS Matter (Track Them This Way) Ben Heath
  9. The one structured, multi week option here, built by Meta itself, for a founder who wants to actually learn to read and... Coursera Course · D2C Meta Marketing Analytics Professional Certificate Meta
  10. Ralph Burns has run performance marketing at scale for over a decade, and this episode makes the case, with a real client story... Perpetual Traffic Podcast · D2C Episode 680 (Part 1): Why ROAS Sucks: The New Marketing Metric Everyone Should Use But Aren't Ralph Burns
  11. Andrew Foxwell runs a community of brand owners collectively spending over 250 million dollars a month on ads, and his blunt... Foxwell Digital Article · D2C ROAS Is Vanity, Profit Is Sanity: Fix Your Metrics Andrew Foxwell
  12. A ready made Google Sheets template to pull reach, CPM, CTR, ROAS, and conversion data out of Ads Manager into one view you can... Catchr Template · D2C Free Meta Ads (ex Facebook Ads) Google Sheets Dashboard Template Catchr
  13. Walks a single order through every hidden cost, COGS, fulfillment, payment fees, returns, to show a 4x ROAS campaign turning... Ask Luca Article · D2C Why Your E-commerce ROAS Is Lying to You and What to Track Instead Ask Luca
  14. Written for Indian D2C founders specifically, and useful precisely because it tells you what to ignore: it calls standalone... Wittelsbach AI Article · D2C D2C Founder Fundraising: The Meta Ads Metrics Investors Actually Care About Wittelsbach AI
  15. Apurv Singh has managed over 50 million dollars in ad spend across Indian brands, and this guide gets specific about the layer... HQ Digital Article · D2C Performance Marketing: The Complete Practitioner's Guide Apurv Singh
  16. The single most India specific resource on this list: it shows how COD and RTO, returns to origin running 25 to 30% of failed... Nurdd Article · D2C Why D2C Brands in India Must Switch from ROAS to POAS Nurdd
  17. Jon Loomer is one of the most cited independent Meta ads specialists and this piece walks the exact diagnostic order the... Jon Loomer Digital Article · D2C What to Check When Meta Ads Aren't Converting Jon Loomer
  18. The official list of exactly which edits reset the learning phase, straight from Meta, which explains why a campaign that... Meta Business Help Center Article · D2C Significant Edits and Learning Phase Meta
  19. A genuinely free (no tier, no session cap) heatmap and session recording tool that lets a founder watch real ad traffic... Microsoft Tool · D2C Microsoft Clarity Microsoft
  20. The most rigorous, primary aggregation of checkout abandonment research that exists (49 studies), useful for a founder deciding... Baymard Institute Report · D2C Cart Abandonment Rate Statistics Baymard Institute
  21. Search Engine Land is a respected trade publication and this piece gives concrete, checkable thresholds (frequency, CTR trend,... Search Engine Land Article · D2C Your ads are dying: How to spot and stop creative fatigue before it tanks performance Ann Robison
  22. Video · D2C Facebook Ads Not Working? Try THIS First Ben Heath
  23. Once tracking and the landing page are ruled out, the remaining leak is usually the offer itself, this is the most widely used... Acquisition.com Book · D2C $100M Offers: How To Make Offers So Good People Feel Stupid Saying No Alex Hormozi
  24. A free, downloadable Google Sheets audit template that turns the whole diagnostic checklist (tracking, structure, creative,... Vaizle Template · D2C Facebook Ads Audit: The Simplest Way So Far (Free Meta Ads Audit Template) Vaizle

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