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.
- Anthropic's scores for Claude in Hindi, Bengali and other languages against English, with three tips: name the languages, use... platform.claude.com Guide · How Founders Use AI Multilingual support Anthropic In 4 answers
- Sarvam's own account of its two open models, how it tests 22 languages in native and English-letter script, and why its... sarvam.ai Article · How Founders Use AI Open-sourcing Sarvam 30B & 105B models Sarvam AI In 4 answers
- How to upload a photo of a space and ask Gemini to change it in plain words, free in the Gemini app. support.google.com Guide · How Founders Use AI Generate and edit images with Gemini Apps Google In 4 answers
- The report that named CapCut among the 47 apps India banned in July 2020, which is why it is not an option here. inc42.com Article · How Founders Use AI Xiaomi Browser, ByteDance's CapCut among 47 Chinese apps banned by India Inc42 In 4 answers
- A hands-on roundup updated 14 October 2026 that names the best general chatbot, the best for writing and coding, and the best... zapier.com Article · How Founders Use AI The best AI chatbots in 2026 Zapier In 4 answers
- Google's own page on what is free: 50 Flow credits a day for every account, 10 credits for an 8-second Veo 3.1 Lite clip, the... support.google.com Guide · How Founders Use AI Manage your Google Flow credits Google In 4 answers
- Anthropic's free course on using Claude for everyday work: first conversations, getting better results, projects, artifacts,... anthropic.skilljar.com Course · How Founders Use AI Claude 101 Anthropic Academy In 4 answers
- Covers opening a PDF in Word to get an editable copy (File > Open) and saving it back as a PDF, with options for file size and... support.microsoft.com Article · How Founders Use AI Save or convert to PDF in Office desktop apps Microsoft Support In 4 answers
- States that every file processed on iLovePDF is deleted automatically within two hours, and that signed documents are kept... ilovepdf.com Article · How Founders Use AI iLovePDF security iLovePDF In 4 answers
- How to trim a video in the Windows Photos app (Ctrl+E), and where to open it in Clipchamp for fuller edits. support.microsoft.com Article · How Founders Use AI Edit photos and videos in Windows Microsoft Support In 4 answers
- A grounded India-specific feature with hard-won lessons from BigBasket, Razorpay, BrowserStack and Instamojo on understanding... Inc42 Article · ~15 min read · Starting Up Defining, Measuring And Solving Product-Market Fit Puzzle For Startups Inc42 In 3 answers
- A PM-turned-founder's playbook that treats defining the right customer and problem as a sequence of concrete hurdles, not... First Round Review Article · ~18 min read · Starting Up 8 Product Hurdles Every Founder Must Clear First Round Review In 3 answers
- A high-signal, battle-tested framework for evaluating engineering talent from a leader who's done it hundreds of times.... First Round Review Article · ~20 min read · Starting Up My Lessons from Interviewing 400+ Engineers Over Three Startups Marco Rogers In 3 answers
- A crisp, visual reference of the psychology principles behind good UX, perfect for a founder who wants the 'why' without a... lawsofux.com Article · reference site · Starting Up Laws of UX Jon Yablonski In 3 answers
- A tight, example-driven breakdown of naming approaches from one of the best practical marketing writers online, memorable and... Marketing Examples Article · 5 min read · Starting Up Four (not boring) ways to name a new product Harry Dry In 3 answers
- A landmark Indian example of content-led growth, Zerodha built trust and a huge audience by teaching in public for free. The... Zerodha Varsity Article · Resource hub · Starting Up Varsity by Zerodha, learn to build an audience by teaching Zerodha In 3 answers
- Fifty-plus recent YC founders answer the exact question every early founder asks. The pattern across their answers is the lesson. YC Startup Library Article · ~10 min read · Starting Up Founder FAQ: How did you get your first customer? Y Combinator (50+ founders) In 3 answers
- A candid Q&A where a top sales founder answers real early-founder questions on outreach, persistence, and closing.... Stripe Atlas Guides Article · ~15 min read · Starting Up AMA with Steli Efti (Stripe Atlas) Steli Efti / Stripe Atlas In 3 answers
- The canonical explanation of why linear funnels break and self-reinforcing growth loops compound, from the team that trains... Reforge Blog Article · ~15 min read · Starting Up Growth Loops Are the New Funnels Brian Balfour & Reforge team In 3 answers
- The canonical book on making community a competitive advantage, from someone who trained community teams at Facebook, Airbnb,... Wiley Book · Book (~256 pages) · Starting Up The Business of Belonging David Spinks In 3 answers
- YC's Startup Library is the canonical, no-fluff reference on how startups actually make money, curated from partners who've... ycombinator.com Article · browsable library · Starting Up Business Models & Metrics, Y Combinator Startup Library Y Combinator In 3 answers
- A practical India-specific guide to term sheets and iSAFEs, written by working Indian VCs and startup lawyers (3one4 Capital,... Inc42 Article · 30 min read (guide) · Starting Up Decoding Term Sheets for Early-Stage Startups Siddarth Pai, Roma Priya, Yagnesh Sanghrajka In 3 answers
- A concrete, tactical guide to presenting yourself well to potential co-founders, useful whether or not you use YC's platform.... YC Startup Library Article · Short read · Starting Up How to make your co-founder matching profile stand out Y Combinator In 3 answers
- A clear, vendor-agnostic explainer of why the Delaware C-corp is the default for high-growth, investor-backed startups and how... stripe.com/resources Article · Guide · Starting Up How to form a Delaware corporation (C corp), Stripe guide Stripe In 3 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 →