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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. A structured breakdown of specific Indian startup failures with the concrete reasons behind each, a pattern library of what... failory.com Article · medium · Starting Up 17 Failed Indian Startups & Analyses on Why They Failed Failory In 2 answers
  2. The complete, tactical playbook for building a bootstrapped one-person business from first customer to acquisition, based on... zerotosold.com Book · long · Starting Up Zero to Sold: How to Start, Run, and Sell a Bootstrapped Business Arvid Kahl In 2 answers
  3. This is the canonical, primary source for how the world's most influential accelerator actually works, deadlines, batch... Y Combinator Article · Application page + FAQ · Starting Up Apply to Y Combinator Y Combinator In 2 answers
  4. India's most prominent early-stage cohort investor and the pioneer of the founder-friendly India SAFE (iSAFE) note, a clean... 100X.VC Article · Program / portfolio site · Starting Up 100X.VC, Funding Simplified, Mentoring Unlimited 100X.VC In 2 answers
  5. The official source for the procurement quotas and price preferences that tilt government buying toward small firms. Combined... msme.gov.in Article · policy page · Starting Up MSME Public Procurement Policy, 25% Purchase Mandate & Price Preference Ministry of Micro, Small & Medium Enterprises In 2 answers
  6. Elad Gil is one of the most trusted operators-turned-investors on this exact question, and this piece cuts through the wrapper... Elad Gil (Elad Blog) Essay · ~12 min read · Starting Up Defensibility & Competition Elad Gil In 2 answers
  7. Most "validate your idea" advice was written for consumer apps, where a landing page and a few hundred signups tell you... Lean B2B Essay · Starting Up The 3 Ways Startup Founders "Sell" Their First Products in B2B Etienne Garbugli In 2 answers
  8. Most validation advice is generic. This one is specific, and it leans on founders (Linear, Mercury) who tested conviction and... First Round Review Article · ~20 min read · Starting Up Is Your Startup Idea Any Good? Borrow These Validation Tactics from the Founders of Linear, Mercury and More First Round Review In 2 answers
  9. This piece takes the exact stance the question is testing: fit is earned, not handed to you on day one. Its line, you earn fit... StartUp to Scale Up Article · Starting Up Founder-Market Fit: What It Is and How to Prove You Have It James Sinclair In 2 answers
  10. This is the sharpest write-up of the exact trap in your question: a past exit buys you trust from investors and hires, and the... NFX Essay · ~12 min read · Starting Up Second-Time Founders: How to Win and Avoid the Common Mistakes James Currier In 2 answers
  11. For B2B founders, a signed letter of intent is the cheapest way to turn "this sounds useful" into a costly commitment before... Learning Loop Article · Starting Up Product Experiment: Letter of Intent, What it is, How it Works, Examples Learning Loop In 2 answers
  12. This is the cleanest, most concrete catalogue of the exact question shapes that quietly steer a person to the answer you... Nielsen Norman Group Article · about 7 min read · Starting Up Avoid Leading Questions to Get Better Insights from Participants Amy Schade In 2 answers
  13. This is the sharpest short framework for the exact question: is the problem a nice-to-have (vitamin) or something people are... brianrhea.com Essay · About a 7 minute read · Starting Up Are You Building a Vitamin or a Painkiller? Why Painkillers Always Win Brian Rhea In 2 answers
  14. This is the most concrete answer to which of your two customers to define first, built from interviews with 17 major... Lenny's Newsletter Article · Long read (about 20 minutes) · Starting Up How to Kickstart and Scale a Marketplace Business, Part 2: Cracking the Chicken-and-Egg Problem (Supply vs. Demand) Lenny Rachitsky In 2 answers
  15. This is the honest version of the horizontal-product problem, told by a founder who lived it at Airtable, a tool that genuinely... First Round Review Essay · Long read, roughly 20 minutes · Starting Up Airtable's Path to Product-Market Fit: Lessons for Building Horizontal Products Andrew Ofstad (Airtable co-founder), interviewed by Todd Jackson In 2 answers
  16. Hoffman and Yeh explain why owning a market densely can beat covering more ground thinly, because network effects and local... Currency (Penguin Random House) Book · 336 pages · Starting Up Blitzscaling: The Lightning-Fast Path to Building Massively Valuable Companies Reid Hoffman and Chris Yeh In 2 answers
  17. Janz's animals framework (mice, rabbits, deer, elephants, whales) reframes the whole niche question around one thing: what does... The Angel VC (Christoph Janz, Point Nine Capital) Essay · Long essay, roughly 15 to 20 minutes · Starting Up Five ways to build a $100 million business Christoph Janz In 2 answers
  18. The honest answer to 'how many' is not a magic number, it is saturation: you keep going until new interviews stop teaching you... Nielsen Norman Group (nngroup.com) Essay · ~10 min read · Starting Up Interview Sample Size in Qualitative UX Research Maria Rosala In 2 answers
  19. This is the deepest practical treatment of pulling the job out of a customer's behavior rather than their words. Moesta... Lioncrest Publishing Book · About 220 pages · Starting Up Demand-Side Sales 101: Stop Selling and Help Your Customers Make Progress Bob Moesta and Greg Engle In 2 answers
  20. The biggest tracking mistake in an MVP is measuring everything and learning nothing. This Amplitude piece walks you through... Amplitude Article · Starting Up Every Product Needs a North Star Metric: Here's How to Find Yours Julia Sholtz In 2 answers
  21. If Spolsky tells you not to rewrite from scratch, this gives you the alternative: replace the old thing piece by piece while it... martinfowler.com Article · ~8 min read · Starting Up Strangler Fig Application Martin Fowler In 2 answers
  22. Arvid Kahl built and sold a company on radical transparency, sharing his real revenue numbers publicly, so this is not a... The Bootstrapped Founder Essay · ~10 min read · Starting Up The Increasing Risk of Building in Public Arvid Kahl In 2 answers
  23. This is Bubble's own guide, and it names the exact levers that decide whether a search stays fast as your data grows: put... manual.bubble.io Article · Starting Up Performance and scaling Bubble In 2 answers
  24. This lays out the one fact most first-time founders get wrong: under Indian copyright law your freelancer owns the code they... iPleaders (blog.ipleaders.in) Article · ~20 min read · Starting Up Freelancer Agreement in India: IP, Ownership and the Clauses That Actually Bind iPleaders In 2 answers

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