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. Press is one of the easiest excuses to relaunch that founders under-use, and this guide teaches you to treat it as ongoing... Y Combinator (YC Startup Library) Article · Starting Up Getting press for your startup Y Combinator In 4 answers
  2. This is the book that made outbound prospecting a repeatable discipline instead of a guessing game, built on the Salesforce.com... predictablerevenue.com Book · ~250 pages · Starting Up Predictable Revenue Aaron Ross and Marylou Tyler In 4 answers
  3. This guide breaks an ICP into demographic, psychographic, and position attributes, then walks through a real worked example,... Reforge Guides Article · 15 min read · Starting Up Define the ideal customer profile Reforge Guides In 4 answers
  4. Google's page on generating a review link or QR code from your profile, with where to use it: receipts, thank-you emails, the... support.google.com Article · Help page · Starting Up Create a Google link or QR code to request reviews Google In 4 answers
  5. Jonathan Stark's short book for consultants and freelancers on pricing by value instead of by the hour: why hourly billing caps... jonathanstark.com Book · Short book · Starting Up Hourly Billing Is Nuts Jonathan Stark In 4 answers
  6. DPIIT's current list of what recognition opens, updated for the Income-tax Act 2025: a three-year 100% tax exemption on profits... startupindia.gov.in Article · PDF playbook · Starting Up Startup Playbook: Exclusive Benefits for DPIIT-Recognised Startups (April 2026) Startup India (DPIIT) In 4 answers
  7. The Ministry of Labour's 21 November 2025 release bringing the four Labour Codes into force, with the before-and-after table:... pib.gov.in Article · Starting Up Government Makes the Four Labour Codes Effective Press Information Bureau In 4 answers
  8. The former Intel CEO's book on management as leverage, where OKRs began. It covers planning, one-to-ones, meetings and... penguinrandomhouse.com Book · Book · Starting Up High Output Management Andrew S. Grove In 4 answers
  9. A reference list broader than just CM1/CM2, useful once you've got the basics down and want to know what an actual CFO would... CFO Matrix Article · D2C D2C Unit Economics: 16 Metrics Every E-commerce Startup Should Know CFO Matrix In 4 answers
  10. A blunt, India-specific playbook on where ad spend actually leaks, useful because it ties creative fatigue and volume directly... Growwwtech Article · D2C Meta Ads for Indian D2C, Stop Burning Money Growwwtech In 4 answers
  11. A straightforward side-by-side of the Indian WhatsApp Business API providers (AiSensy, Interakt, WATI, Gupshup, and more) so... Zaptick Article · D2C 11 Best WhatsApp Marketing Tools & Software in India Zaptick In 4 answers
  12. The canonical India-facing starting point, lays out the 18+ marketplaces, the paperwork you need, and the fulfillment/payment... sell.amazon.in Article · D2C Export from India and Start Selling with Amazon Global Selling Amazon India In 4 answers
  13. The most concrete India-founder account of going global, Vahdam's Bala Sarda built a brand where cross-border is ~90% of... inc42.com Article · D2C Decoding D2C Brand Vahdam's 9-Point Global Expansion Playbook Inc42 In 4 answers
  14. GST registration is mandatory for Indian ecommerce sellers regardless of revenue, and your GSTIN needs to show up on your... indiafilings.com Article · D2C GST Registration for eCommerce Business India IndiaFilings In 4 answers
  15. One of the few pieces that actually maps Shopify, WooCommerce, Dukaan and Zoho Commerce against Indian founder stages -... goqpe.com Article · D2C Best E-commerce Platforms for D2C Brands in India (2026 Edition) QPe In 4 answers
  16. An India-first take on retention that names the specific levers Indian brands actually use - WhatsApp CRM, loyalty programs,... productgrowth.in Article · D2C D2C Retention Playbook: How India's Best Brands Win ProductGrowth.in In 4 answers
  17. A catalogue of the specific cons that trip up product founders, the golden-sample switch, fake certifications, price... cosmosourcing.com Article · D2C Common Supplier Scams and How to Avoid Sourcing Fraud Cosmo Sourcing In 4 answers
  18. Explains how showing the full landed price (product plus duty plus tax) at checkout, not just a converted product price,... shopify.com Article · D2C Better Global Buying Experiences With Duties & Import Taxes at Checkout Shopify In 4 answers
  19. A practitioner's honest read on where PMax actually delivers for ecommerce versus where founders overtrust the automation,... Store Growers Article · D2C Performance Max for Ecommerce: What Actually Works in 2026 Store Growers In 4 answers
  20. Frames Google spend as one piece of an Indian D2C brand's blended channel mix (with a suggested 25-30% allocation to... upGrowth Article · D2C D2C Performance Marketing in India: The 2026 Playbook upGrowth In 4 answers
  21. A concrete before/after case study, 60,000 sq ft warehouse, sub-48-hour fulfillment, 99.99% bin-level accuracy, that shows what... Increff Case Studies Article · D2C The Indian Garage Co.: Scaling New Heights in D2C Fashion with Increff Increff In 4 answers
  22. The most honest India-specific DIY walkthrough we found: it puts real numbers on what it takes (Rs 30,000-50,000 learning... Growwwtech Article · D2C DIY Meta Ads for D2C 2026: The Complete Setup Growwwtech In 4 answers
  23. The clearest explanation of why a physical, signed sample, not a spec sheet, is the real definition of 'correct' once... insight-quality.com Article · D2C What Is a Golden Sample in Manufacturing, and Why Are They Essential? Insight Quality In 4 answers
  24. Makes the direct case for treating the pre-production sample as your last checkpoint before a batch you can't easily undo. ninghowapparel.com Article · D2C The Importance of the PP Sample: Risk Control & Golden Sample Insights Ninghow Apparel In 4 answers

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