Understand your customers
Talk to real users, define who you're for, and read the market clearly.
What founders use for understand your customers, ranked by how many answers lean on it.
- This is the practical, step-by-step manual for the Lean Startup ideas, built around the one-page Lean Canvas and a system for... LeanFoundry Book · 240 pages Running Lean: Iterate from Plan A to a Plan That Works Ash Maurya
- Free to read online, with chapters like "Build Less" and "Half, Not Half-Assed" that name your exact trap. It argues that... Basecamp / 37signals Book · Free online, ~4 hr Getting Real (free to read online) Jason Fried, David Heinemeier Hansson (37signals)
- Chen lays out the clearest early signal that people actually value your product: do cohorts keep coming back over time. He... andrewchen.com Essay · Medium read How to measure if users love your product using cohorts and revisit rates Andrew Chen
- A single average retention number hides whether you have a small core of people who love the product, which is the seed you... Andrew Chen Essay · 12 min read The Power User Curve Andrew Chen
- A clean primer if you have never run a test. It defines the three pieces that matter (a facilitator who does not lead,... Nielsen Norman Group Article · ~12 min read Usability Testing 101 Kate Moran
- Zerodha built one of India's most used products with a tiny team and a stubborn focus on simplicity over polish. Kamath's view... Inc42 Article · 15 minute read Instincts, People and Vision: Nithin Kamath on Zerodha's Product Secrets Inc42
- Testing with the wrong five people teaches you nothing, so this piece helps you decide who your five should actually be.... Lenny's Newsletter Article Identify your bullseye customer in one day Michael Margolis
- Before you optimize a byte, you need to know who you are building for, and Pai's India1, India2, India3 framing is the clearest... SajithPai.com Essay · Long read India2, English Tax and Building for the Next Billion Users Sajith Pai
- A short interview where Kunal Shah argues margins come from desire, which design creates, rather than from utility alone. It is... Outlook Business Article Margins Are Earned from Desire, Not Utility, says CRED founder Kunal Shah Kunal Shah
- This is the canonical source for the claim that the customers you already have are far cheaper to keep than the ones a shiny... Harvard Business Review Article The Value of Keeping the Right Customers Amy Gallo
- Thiel pushes you to look for ideas hidden in plain sight by asking what important truth very few people agree with you on. It... Peter Thiel and Blake Masters Book · About 220 pages Zero to One Peter Thiel and Blake Masters
- Intercom's Jobs-to-be-Done writing shows how to ask what customers are hiring your product to do, which forces you to describe... Intercom Article · ~short book, free Understanding Jobs-to-be-Done Des Traynor, Intercom
- This explains the exact cognitive trap behind insider bias: once you know a domain deeply you cannot un-see it, so you assume... CXL Article · ~12 min read The Curse of Knowledge: How Expertise Can Hurt Your Communication CXL
- Essential reading for anyone sizing an Indian market. Pai shows that India's billion people are not one payable market: roughly... Sajith Pai Essay India1, Avocado Startups, and Finding Product Market Fit Sajith Pai
- Blank shows that entering a new market, an existing one, or a resegmented niche demands completely different strategies, burn... steveblank.com Article Customer Development Manifesto: Market Type Steve Blank
- A customer acquisition playbook that helps you commit to a growth lane and get world class at it, backed by case studies. It is... First Round Review Article Drive Growth by Picking the Right Lane: A Customer Acquisition Playbook for Consumer Startups Dan Hockenmaier, Lenny Rachitsky
- Written by the founder of ConvertKit, this book is squarely about the sequence your short answer describes: build an audience... nathanbarry.com Book · Book Authority: Become an Expert, Build a Following, and Gain Financial Independence Nathan Barry
- Slack iterated privately with a small team for months, using what they learned to earn a preview release that then turned into... First Round Review Article · 20 min read From 0 to $1B: Slack's Founder Shares Their Epic Launch Strategy First Round Review
- This breaks founder sales into seven distinct conversation types, from qualifying to first contact to asking for a referral, so... SaaStock Article · ~7 min read The 7 Essential Customer Conversations According to Steli Efti Steli Efti
- A direct answer to the exact question in the title: yes, charge for pilots, and here's roughly how much. Jason Lemkin argues... SaaStr Article Dear SaaStr: Should We Charge for Pilots and How Much? Jason Lemkin
- A concise reference sheet that names the exact failure modes this question is about: leading questions like wouldn't you agree... Harvard Business School, Rock Center for Entrepreneurship Article · 5 min read Customer Discovery Basics Harvard Business School, Rock Center for Entrepreneurship
- Alvarez names the specific mistakes founders make even after reading the theory: multi part questions that let people dodge the... cindyalvarez.com Essay · 8 min read 5 Common Customer Development Mistakes Cindy Alvarez
- Wunker's Jobs to Be Done framework gets an Indian audience through this YourStory piece, useful if you want the underlying... YourStory Article · ~8 min read Unlocking customer-centric innovation with author Stephen Wunker Stephen Wunker
- Wilcox tackles this exact question head on, and rejects the tempting stop when you stop learning something new answer since you... Customer Dev Labs Article How Many Customers Should You Interview? Justin Wilcox
The questions
Talking to customers & user research 18
Learn the truth without leading the witness.
How do I talk to customers without them just telling me what I want to hear?
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What questions should I actually ask in a customer interview?
22 →
How many customer interviews do I need before I trust the signal?
24 →
Where do I find people to interview when I have zero audience?
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How do I run customer discovery as an Indian founder building for Indian users?
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All 18 questions in Talking to customers & user research →
Defining your ideal customer 18
Know exactly who you're for (and who you're not).
What is an ideal customer profile and how do I define mine?
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How specific should my target customer be when I'm just starting?
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What's the difference between an ICP, a buyer persona, and a target market?
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How do I know if I'm targeting the wrong customer?
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Should I focus on one customer segment or serve everyone who'll pay?
23 →
All 18 questions in Defining your ideal customer →
Finding your niche / beachhead 17
Win a tiny market completely before going wide.
What is a beachhead market and why does everyone say to start with one?
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How do I pick which niche to go after first?
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Isn't picking a tiny niche going to limit how big I can get?
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How do I know when I've won my niche and it's time to expand?
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How do I find a defensible niche in a market full of big incumbents?
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All 17 questions in Finding your niche / beachhead →
Understanding the problem (JTBD) 17
People hire products to do a job, find the job.
What does 'jobs to be done' actually mean?
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How is JTBD different from features, personas, or user needs?
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How do I actually uncover the job my customers are hiring my product for?
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Who are my real competitors once I think in jobs to be done?
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How do I turn a job to be done into product and messaging decisions?
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All 17 questions in Understanding the problem (JTBD) →
Competitive & market research 18
Know the landscape better than the incumbents.
How do I research my competitors properly?
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What if my customers say they have no competitors, is that good or bad?
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What tools should I use to track competitors and market landscape?
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How do I position against a bigger, better-funded competitor?
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How do I size the market and figure out if it's big enough?
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All 18 questions in Competitive & market research →
eChai Partner Brands
The partnership →