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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. This is Meta's own plain language explainer of the auction, the primary source for the three inputs your ad is actually judged... Meta for Business Article · D2C Facebook Ad Auctions Explained Meta for Business
  2. Once you know the auction has a bid component, this is the clearest breakdown of which bid strategy actually controls what,... Jon Loomer Digital Article · D2C Facebook Ads Bid Strategies: Lowest Cost, Cost Cap, Bid Cap Jon Loomer
  3. The auction runs on Meta's estimate of who will buy, and that estimate is only as good as the purchase data you send back. This... Meta for Developers Article · D2C Conversions API Meta for Developers
  4. Since creative wins the auction, this guide teaches you to actually use Meta's free public Ads Library to see what every... Foreplay Article · D2C Facebook Ads Library: The Definitive Guide Foreplay
  5. Meta's own page on how tax is applied to your ad spend, the starting point for an Indian founder before assuming their invoiced... Meta Business Help Centre Article · D2C Taxes on Meta ads placement Meta Business Help Centre
  6. Meta does not charge GST on its invoice to Indian advertisers, so most founders underestimate the real cost of their ad spend... Legal Suvidha Article · D2C Facebook Ads TDS & Refund Rules 2026-27 Legal Suvidha
  7. Reports the removal of the 6 percent equalisation levy on foreign digital ad platforms from April 2025, a real change to the... Business Standard Report · D2C India to scrap 6% equalisation levy on digital ads, leading to revenue loss Business Standard
  8. An independent market data report on where Indian digital ad spend is actually going, useful for benchmarking whether your own... Sensor Tower Report · D2C India State of Digital Advertising 2025 Sensor Tower
  9. It is the exact screen by screen path Meta expects you to follow, useful for cross checking against whatever a paid tutorial... Meta Business Help Center Article · D2C Set up and install the Meta Pixel Meta Business Help Center
  10. Read this before touching any settings so you understand why CAPI exists, not just how to click through it. Meta Business Help Center Article · D2C About Conversions API Meta Business Help Center
  11. This is the actual settings page language you will see inside your own Shopify admin, so it removes guesswork about which... Shopify Help Center Article · D2C Facebook data sharing Shopify Help Center
  12. Running pixel and CAPI together without matching event_ids just means you're double counting, not building redundancy. This... Meta for Developers Article · D2C Handling Duplicate Pixel and Conversions API Events Meta for Developers
  13. If you're not on Shopify or want a CAPI setup independent of your platform's native app, this is the clearest independent... Jon Loomer Digital Article · D2C Set Up Meta Conversions API Gateway Using Stape Jon Loomer
  14. Turning on CAPI is step one. This is the step two guide for making sure the data you send is actually good enough for Meta to use. WeltPixel Article · D2C Meta Event Match Quality (EMQ): How to Improve Your Score WeltPixel
  15. Indian founders hit business verification friction Western guides never mention. This is written for exactly that gap, using... Interakt Article · D2C 10 Step Guide To Get Meta Business Verification [Without Website] Interakt
  16. A clear technical comparison from a Chennai built team that builds first party data tooling for a living, useful once you're... CustomerLabs Article · D2C Conversions API vs. Meta Pixel: What's Better for Tracking? CustomerLabs
  17. Most tracking guides ignore what stage a brand is at. This one is pegged to a specific, realistic Indian D2C spend level, so... Wittelsbach Report · D2C 10L/Month D2C Brand Meta Ads Playbook: From Survival to First Profitable Spend Wittelsbach
  18. This is Meta's own definition of the learning phase and the roughly 50 optimization events a week benchmark our short answer is... Meta Business Help Center Article · D2C About the Learning Phase Meta
  19. Meta's own pricing and budgeting primer spells out the actual platform minimums, so you know the floor before you decide your... Meta for Business Article · D2C Facebook and Instagram Ads: Budgets, Costs & Schedules Meta
  20. Loomer is one of the most cited independent Meta ads practitioners, and this piece turns the abstract 50 events rule into... Jon Loomer Digital Article · D2C Facebook Ads and the Learning Phase Jon Loomer
  21. Shopify updates this cost breakdown against live data on a rolling basis, so the CPC and CPM benchmarks and the learning phase... Shopify Article · D2C What Facebook Ads Cost in November 2025 Shopify
  22. Brings in a practitioner's rule (start with roughly $1,000 for low ticket products, more for high ticket) rather than a flat... HubSpot Article · D2C How to Plan Your Facebook Ads Budget (And Make The Biggest Impact) HubSpot
  23. A long running, frequently updated benchmark piece with cost per click broken out by industry, so you can sanity check whether... WordStream Article · D2C How Much Do Facebook Ads Cost? (+9 Ways to Stretch Your Budget) WordStream
  24. Real bootstrapped founders comparing notes on their actual starting numbers, a useful gut check against the agency scale advice... Indie Hackers Thread · D2C How much should I be spending on ads? Indie Hackers

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