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.
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Video · How Founders Use AI
Turn Open-ended Survey Data into Insights with AI
Philip Adu, Ph.D
- Independent research on where AI survey analysis is reliable and where it drifts. campaigninnovation.org Article · How Founders Use AI From Open-Ends to Insights: Leveraging AI in Survey Response Analysis Center for Campaign Innovation
- A respected marketer's concrete recipe for exporting GA4 data and interrogating it with AI. orbitmedia.com Article · How Founders Use AI How to combine ChatGPT with GA4 for content marketing insights Andy Crestodina (Orbit Media)
- Practical GA4-to-ChatGPT patterns for founders who find the GA4 interface hostile. monsterinsights.com Article · How Founders Use AI 8 Best Ways to Use ChatGPT with Google Analytics (GA4) MonsterInsights
- A connector that pipes live GA4 data into ChatGPT so you skip the CSV export step. windsor.ai Tool · How Founders Use AI Connect Google Analytics 4 to ChatGPT Windsor.ai
- Honest about the failure modes of CSV-in-chat analysis, not just the wins. wisdom.ai Article · How Founders Use AI Analyze CSV Data with ChatGPT: Tutorial, Challenges, and Limitations Wisdom AI
- A structured course if your growth data lives in GA4 and you want repeatable AI workflows. udemy.com Course · How Founders Use AI ChatGPT For Google Analytics 4: Ultimate 2025 Guide Udemy
- Maps Claude's chat, code-execution, and Claude Code layers so you pick the right one per job. datastudios.org Article · How Founders Use AI Claude for data analysis: files, charts, code, and context Data Studios
- The primary source on what Claude for Excel is built to do and for whom. anthropic.com Article · How Founders Use AI Advancing Claude for Financial Services (Claude for Excel announcement) Anthropic
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Video · How Founders Use AI
Getting started with Claude in Excel
Claude (Anthropic)
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Video · How Founders Use AI
How to Use Claude for Excel (Step-by-Step Tutorial)
Kevin Stratvert
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Video · How Founders Use AI
NEW Claude in Excel: How Good Is It?
Kenji Explains
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Video · How Founders Use AI
I Tested Claude in Excel and It Has Blown my Mind
Excel Champs
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Video · How Founders Use AI
How to Use Claude for Excel: Complete Beginner Guide
Teacher's Tech
- Independent evidence of a full working spreadsheet built from a single prompt. x.com Thread · How Founders Use AI Ethan Mollick: Claude's Excel ability is the best I have seen (406 formulas from one prompt) Ethan Mollick
- Why the same model gives different quality depending on how the spreadsheet agent works. x.com Thread · How Founders Use AI Ethan Mollick: Claude in Excel vs Microsoft's own Excel agent Ethan Mollick
- A skeptical outside view on where the add-in fits against Copilot. techradar.com Article · How Founders Use AI Anthropic's Claude just invaded Excel TechRadar Pro
- A veteran analyst's balanced scorecard, useful before you trust it with your model. dataanalysis.substack.com Article · How Founders Use AI Claude for Excel: What It Does Well and Where It Still Falls Short Olga Berezovsky (Data Analysis Journal)
- Google's own map of what Gemini can do inside Sheets, from charts to insights. workspace.google.com Guide · How Founders Use AI Gemini in Google Sheets (official hub) Google Workspace
- The reference for =AI("prompt", range), the single most useful Sheets AI primitive. support.google.com Guide · How Founders Use AI Use the AI function in Google Sheets Google
- The primary-source changelog on Gemini generating and filling data in Sheets. workspaceupdates.googleblog.com Article · How Founders Use AI Generate data with Gemini in Google Sheets Google Workspace Updates
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Video · How Founders Use AI
How to Use the NEW Google Sheets AI Function
Peter's Google Tips
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Video · How Founders Use AI
Use the AI Function in Google Sheets
Flipped Classroom Tutorials
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Video · How Founders Use AI
Work Smarter with Google Sheets AI (Gemini Tutorial)
Stewart Gauld
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.