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.
- The government-backed way to hold gold that pays interest and skips storage; new issues stopped after February 2024, so... ClearTax Article · Wealth Sovereign Gold Bonds ClearTax In 5 answers
- What a REIT is, how it works in India, and why it gives property exposure with far more liquidity than a flat. ClearTax Article · Wealth REITs: real estate investing without buying property ClearTax In 5 answers
- A guide to section 123 and Schedule XV, the provision that replaced section 80C from 1 April 2026: what qualifies and the limit. ClearTax Article · Wealth Section 123 of the Income-tax Act, 2025 (formerly 80C) ClearTax In 5 answers
- A calculator that works out your tax under both regimes from your salary and deductions, with the slabs and the deductions each... ClearTax Tool · Wealth Old vs new tax regime: calculator and comparison ClearTax In 5 answers
- A chartered accountant's walk-through of how a buyback of shares is taxed from 1 April 2026, including the additional tax on... Taxguru Article · Wealth Buyback taxation under the Finance Act, 2026 CA Prajakta Mondhe In 5 answers
- The written breakdown of the same case, with the operating model you can copy. lennysnewsletter.com Article · How Founders Use AI We replaced our sales team with 20 AI agents (essay version) Lenny Rachitsky In 5 answers
- The clearest primary definition: workflows run on predefined code paths, agents let the model direct its own process and tools,... anthropic.com Guide · How Founders Use AI Building effective agents Anthropic In 5 answers
- A user-research veteran's workflow that forces exact quotes and catches contradictions. lennysnewsletter.com Article · How Founders Use AI How to do AI analysis you can actually trust Caitlin Sullivan, Lenny's Newsletter In 5 answers
- Tested comparison across avatar, text-to-video, and editing tools. zapier.com Guide · How Founders Use AI The 16 Best AI Video Generators Zapier In 5 answers
- Anthropic on letting Claude act in the browser without approving each step, with a safety classifier checking every action. claude.com Article · How Founders Use AI Claude in Chrome is generally available Anthropic In 5 answers
- Anthropic's post on handing Claude a whole report or deck from any conversation and letting it finish after you close the laptop. claude.com Article · How Founders Use AI Claude Cowork and chat are now one Claude Anthropic In 5 answers
- Which file types count as sources and the free plan's limits of 50 sources and 500,000 words each. support.google.com Guide · How Founders Use AI Add or discover new sources for your notebook Gemini Notebook Help In 5 answers
- Google's plan page in rupees, including which plan unlocks tasks in Gemini. gemini.google Tool · How Founders Use AI Google AI Pro & Ultra: get access to Gemini 4 Argon & more Google In 5 answers
- Free to start; Hobbyist $16 a month billed yearly for watermark-free 1080p exports, for editing a talking video by editing its... descript.com Tool · How Founders Use AI Descript pricing Descript In 5 answers
- OpenAI's learning hub: the AI Foundations course (about 70 minutes, self-paced, with a completion certificate), Applied AI... openai.com Course · How Founders Use AI OpenAI Academy OpenAI In 5 answers
- A UX-research leader (ex-Uber Eats, BetterUp) gives founders a concrete three-step discovery process, including how to recruit... First Round Review Article · ~20 min read · Starting Up A founder-friendly playbook for early customer discovery First Round Review (Jeanette Mellinger) In 4 answers
- A clear, operator-written guide from a respected SaaS-analytics company on defining and using an ICP to focus scarce startup... ChartMogul Blog Article · ~12 min read · Starting Up Without an ideal customer profile (ICP), your growth is just guesswork ChartMogul In 4 answers
- One of the few pieces that clearly untangles ICP vs persona vs JTBD without jargon, so founders stop conflating them. Useful as... netretention.io Article · ~14 min read · Starting Up Ideal Customer Profiles (ICPs), ABM, JTBD and Personas: knowing your customer Net Retention In 4 answers
- The most practitioner-friendly deep dive into JTBD, with interviews and case studies on applying it to real products. Free to... jtbd.info / alanklement.com Book · ~230 pages · Starting Up When Coffee and Kale Compete: Become great at making products people will buy Alan Klement In 4 answers
- A free, author-written summary of the positioning framework for founders who want the core idea before buying the book, perfect... aprildunford.com Article · ~8 min read · Starting Up My Positioning Book 'Obviously Awesome' Launches Today April Dunford In 4 answers
- YC is the canonical authority on early-stage team formation, and this is their direct playbook for the exact problem a... YC Startup Library Article · ~12 min read · Starting Up How to Find a Technical Co-Founder Y Combinator In 4 answers
- Julian Shapiro's deeply practical framework for landing pages, including the desire-minus-friction conversion model, a... julian.com Article · 25 min read · Starting Up How to build a landing page (Startup Handbook) Julian Shapiro In 4 answers
- When you want a more polished, professional-looking site that can grow into multiple pages, Framer's free tier and templates... framer.com Tool · Tool · Starting Up Framer, design-led website builder Framer In 4 answers
- Harry Dry's core copywriting rules distilled with dozens of real examples, the fastest way to level up your writing from vague... Marketing Examples Article · 8 min read · Starting Up How to write copy that sells (three rules) Harry Dry In 4 answers
The hubs
Starting Up
Find an idea, validate it, build, and land your first customers.
GTM
Go-to-market, from breaking in to how the best teams do it.
D2C
Building a direct-to-consumer brand, India-first.
Wealth
Paying yourself, ESOPs, secondaries, and de-risking founder wealth.
How Founders Use AI
How founders actually put AI to work, mapped topic by topic.
Glossary
Plain-language definitions of the startup and VC terms you'll hit.
eChai Partner Brands
The partnership →