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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 the other half of your answer: what to do once the thing works. It walks a non-technical founder through when and how... TechCrunch Article · Starting Up How to hire your first engineer: A guide for nontechnical founders TechCrunch In 5 answers
  2. Once no-code has carried you to traction, this is a grounded guide to building the early team you eventually need, including... Lenny's Newsletter Article · Starting Up Hiring your early team Lenny Rachitsky In 5 answers
  3. The CTO of India's largest broker explains how a tiny team scales huge load by optimizing the application before touching... Zerodha Tech Blog Article · 15 min read · Starting Up Scaling with common sense Kailash Nadh In 5 answers
  4. Zerodha, India's largest broker, built almost everything in house with a famously small team, and its CTO explains why owning... Software at Scale Podcast · 1 hr · Starting Up Building Zerodha with Kailash Nadh Utsav Shah In 5 answers
  5. Linear is a small, largely distributed team that ships a famously polished product, and this breaks down how they organize... Lenny's Newsletter Article · ~20 min read · Starting Up How Linear builds product Lenny Rachitsky In 5 answers
  6. Users judge attractive products as more usable, which is why polish matters and also why it can hide real problems. As a... Nielsen Norman Group Article · 8 min read · Starting Up The Aesthetic-Usability Effect Kate Moran In 5 answers
  7. Before you optimize a byte, you need to know who you are building for, and Pai's India1, India2, India3 framing is the clearest... SajithPai.com Essay · Long read · Starting Up India2, English Tax and Building for the Next Billion Users Sajith Pai In 5 answers
  8. This is the practical how-to for actually running the weekly cadence, covering the part most founders get stuck on: recruiting... Product Talk Article · Starting Up Customer Interviews: How to Recruit, What to Ask, and How to Synthesize What You Learn Teresa Torres In 5 answers
  9. The full book behind the essay, for when you want the system and not just the idea. It gives you the language of outcomes over... Melissa Perri (O'Reilly) Book · 200 pages · Starting Up Escaping the Build Trap Melissa Perri In 5 answers
  10. A well organized menu of twelve concrete approaches drawn from real founders, useful when you want structured prompts without... First Round Review (review.firstround.com) Article · ~20 min read · Starting Up 12 Frameworks for Finding Startup Ideas First Round Review In 5 answers
  11. Essential reading for anyone sizing an Indian market. Pai shows that India's billion people are not one payable market: roughly... Sajith Pai Essay · Starting Up India1, Avocado Startups, and Finding Product Market Fit Sajith Pai In 5 answers
  12. Video · 7 min · Starting Up The single biggest reason why startups succeed Bill Gross In 5 answers
  13. A side-by-side of both methods that makes clear why you use bottom-up as your primary number and top-down only as a rough... Waveup Article · 14 min read · Starting Up Top-Down vs Bottom-Up Market Size Calculation Waveup In 5 answers
  14. Andreessen's 2011 essay is a masterclass in spotting a durable secular shift early and betting on it before it is obvious to... Andreessen Horowitz Essay · Starting Up Why Software Is Eating the World Marc Andreessen In 5 answers
  15. A short, sharp counterpoint to the instinct to try to reach everyone before you launch: Godin argues you should aim for the... Seth's Blog Essay · 3 min read · Starting Up The smallest viable audience Seth Godin In 5 answers
  16. A tight five-part framework (short, personalized, credible, valuable, clear ask) with real examples of emails that led to... The Curiosity Chronicle Essay · 10 min read · Starting Up The Cold Email Guide Sahil Bloom In 5 answers
  17. Steli Efti built his sales career on the belief that unanswered outreach is a maybe, and a maybe is what kills deals. This... Close Article · Starting Up The Winning Cold Email Follow-up Plan for Sales Teams Steli Efti In 5 answers
  18. A quick, free way to get a first-draft persona document out of your head and onto one page, useful exactly because our short... HubSpot Tool · Starting Up Make My Persona HubSpot In 5 answers
  19. A fill-in worksheet that pushes you past anyone who could pay into specific, written traits: company size, budget, urgency of... HubSpot Template · Starting Up Ideal Customer Profile (ICP) Guide and Worksheet HubSpot In 5 answers
  20. 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 5 answers
  21. The rare guide written specifically for D2C founders rather than generic startups, it walks through incorporation, GST,... IncorpX Article · D2C D2C Brand Registration & Compliance India 2026 IncorpX In 5 answers
  22. The deepest independent usability research base on why carts get abandoned - the '70% abandonment' figure and specific checkout... baymard.com Article · D2C E-Commerce Cart & Checkout Usability Research Baymard Institute In 5 answers
  23. A founder-voice, long-form account of how Wakefit's early demand testing and customer conversations actually happened, useful... Founder Thesis Podcast · D2C Dreaming with Resilience: Ankit Garg's Journey Building Wakefit into India's ₹1100 Cr Home Solutions Giant Founder Thesis In 5 answers
  24. A rare India-specific look at non-dilutive funding for D2C brands - working capital and revenue-based debt matched to inventory... recurclub.com Article · D2C How D2C SMEs in India Are Using Debt Financing to Scale Sustainably Recur Club In 5 answers

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