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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. Video · How Founders Use AI RAG Explained For Beginners KodeKloud
  2. Video · How Founders Use AI Build and Deploy a RAG Chatbot with JavaScript, LangChain.js, Next.js freeCodeCamp (Ania Kubow)
  3. Video · How Founders Use AI How I use LLMs Andrej Karpathy
  4. Video · How Founders Use AI AI Engineer World's Fair 2025: Evals track AI Engineer conference
  5. Video · How Founders Use AI Everything Gets Rebuilt: The New AI Agent Stack Harrison Chase (LangChain)
  6. Video · How Founders Use AI How Perplexity works | Aravind Srinivas and Lex Fridman Lex Fridman
  7. Video · How Founders Use AI Can Perplexity beat Google? | Aravind Srinivas and Lex Fridman Lex Fridman
  8. Video · How Founders Use AI Perplexity CEO explains RAG: Retrieval-Augmented Generation Lex Fridman
  9. Video · How Founders Use AI Nikhil Kamath ft. Perplexity CEO Aravind Srinivas | WTF Online Ep 1 Nikhil Kamath (WTF)
  10. Video · How Founders Use AI How To Use Perplexity AI For Research - Terrifyingly SMART! AI educator (YouTube)
  11. Video · How Founders Use AI How to Use Perplexity AI 2025 (Step by Step Tutorial for Beginners) YouTube tutorial
  12. OpenAI's own India-focused session on replacing search with ChatGPT's research stack. academy.openai.com Video · How Founders Use AI ChatGPT for Research: Web Search, Deep Research & Code (OpenAI Academy India) OpenAI Academy India
  13. Video · How Founders Use AI Introduction to Deep Research (launch demo from Tokyo) OpenAI
  14. Video · How Founders Use AI OpenAI's Deep Research Agent in 8 Minutes YouTube explainer
  15. Video · How Founders Use AI No Priors Ep. 112: OpenAI Deep Research with Isa Fulford No Priors (Sarah Guo, Elad Gil)
  16. Video · How Founders Use AI Deep Research Battle: Gemini beats ChatGPT, Perplexity & Grok YouTube AI reviewer
  17. Video · How Founders Use AI Why Large Language Models Hallucinate Martin Keen, IBM Technology
  18. Video · How Founders Use AI OpenAI Explains: Why Language Models Hallucinate & How to Reduce Them YouTube AI explainer
  19. Video · How Founders Use AI How to Fact-Check ChatGPT and Other AI Tools YouTube tutorial
  20. Video · How Founders Use AI ChatGPT, Claude, Gemini, Grok, Perplexity: Which One Is Actually Worth It? YouTube AI reviewer
  21. Video · How Founders Use AI How To Use Perplexity AI (Best AI Research Tool) YouTube tutorial
  22. Prompting techniques specifically aimed at getting fewer made-up answers. mediacenter.ibm.com Video · How Founders Use AI Tuning Your AI Model to Reduce Hallucinations IBM
  23. Video · How Founders Use AI How to Do a Market Research With AI YouTube tutorial
  24. Video · How Founders Use AI The State of AI in Market Research and Insights in 2025 Ray Poynter (NewMR) & Yasna.ai

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The hubs

Starting Up Find an idea, validate it, build, and land your first customers. 1046 questions GTM Go-to-market, from breaking in to how the best teams do it. 352 questions D2C Building a direct-to-consumer brand, India-first. 482 questions Wealth Paying yourself, ESOPs, secondaries, and de-risking founder wealth. 154 questions How Founders Use AI How founders actually put AI to work, mapped topic by topic. 278 questions Glossary Plain-language definitions of the startup and VC terms you'll hit. 390 terms
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