📖 Book
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Paid
Beginner
Why we picked it
The single best thing ever written on customer conversations. It teaches you to ask about the customer's life and past behaviour, not your idea, so you can't be lied to. If a founder reads one thing before talking to a single customer, it's this.
From
momtestbook.com
by Rob Fitzpatrick
~130 pages
- Talk about their life, not your idea.
- Ask about specifics in the past, not opinions about the future.
- 'That's so cool, I'd totally buy it' is a compliment, not data, dig for commitment and evidence.
Open
momtestbook.com →
📄 Article
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Free
Beginner
Why we picked it
The cleanest distillation of the one framework that turns a customer chat into a relationship instead of a survey. The three rules (talk about their life not your idea, ask about the past not hypotheticals, and chase real commitments of time, reputation, or money) are exactly how you get an early customer to tell you what nearly stopped them from buying and who else you should talk to. Rekhi is a product leader, so the examples are operator-grade, not book-report fluff.
From
Sachin Rekhi's Blog
by Sachin Rekhi
10 min read
- Never pitch your idea in the conversation; ask how they handle the problem today and what it costs them, so praise can't lie to you.
- The strongest signal is a commitment that costs them something: a trial, an intro to a colleague, or a pre-order.
- 'Would you buy this?' teaches you nothing; 'walk me through the last time you dealt with this' surfaces the real story and the referral.
Open
sachinrekhi.com →
✍️ Essay
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Free
Intermediate
Why we picked it
Blank invented customer development, and this manifesto boils it into a short set of rules, starting with the idea that there are no facts inside your building so get outside. It is the origin of the discipline that says a startup is a search for a business model you must test, not execute. Read it for the founding principles in one page.
From
Steve Blank
by Steve Blank
12 min read
- There are no facts inside the building, so get out and talk to customers
- A startup searches for a business model, it does not just execute a plan
- Your assumptions are hypotheses until customer evidence confirms them
Open
steveblank.com →
📖 Book
✓ Link checked
Paid
Intermediate
Why we picked it
Most founders treat customer research as a one-time pre-launch exercise, then go quiet once the product ships. Torres makes the opposite case: the core habit is talking to a handful of customers every single week, run by the same people building the product, so learning never stops. This is the clearest, most practical playbook for turning discovery into a standing rhythm instead of a project.
From
Amazon
by Teresa Torres
~200 pages
- The keystone habit is weekly touchpoints with 5 to 7 customers, done by the team building the product, not outsourced to a research department
- Use story based interviews (ask about a specific recent experience) instead of asking people what they want or would do in the abstract
- Tie every interview back to a desired outcome using opportunity mapping, so research drives decisions rather than piling up as notes
Open
amazon.com →
📖 Book
✓ Link checked
Paid
Intermediate
Why we picked it
A hands-on companion to The Mom Test with more structure on who to talk to and how to run the process. Alvarez is strong on separating what customers say they want from what they actually need and will pay for. Practical scripts and a repeatable five-step loop.
From
Cindy Alvarez
by Cindy Alvarez
~240 pages
- Find customers and their problems before building.
- Distinguish wants from needs.
- Build continuous learning into how you work.
Open
cindyalvarez.com →
✍️ Essay
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Free
Beginner
Why we picked it
The definitive essay on where good ideas come from: notice problems you personally have, don't force it. Use it as the lens for judging whether your idea is a real problem or a solution in search of one.
From
paulgraham.com
by Paul Graham
~20 min read
- Live in the future and build what's missing.
- The best ideas look like bad ideas at first (schleps and hard-to-explain).
- Start with problems you have, in a domain you actually know.
Open
paulgraham.com →
📄 Article
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Free
Beginner
Why we picked it
A founder-friendly crash course on planning and running discovery interviews, with tactics from researchers at Zoom, Zapier, and Dropbox. It is especially good on picking the one or two things you must learn and writing questions that do not lead the answer. Concrete and skimmable.
From
First Round Review
by Jane Davis
20 min read
- Decide the two things you must learn before the call.
- Reframe important questions from several angles.
- Check your own bias before interpreting answers.
Open
review.firstround.com →
📄 Article
✓ Link checked
Free
Beginner
Why we picked it
A detailed, honest set of notes on The Mom Test from a founder's point of view, with the best example questions pulled out. A useful free reference to revisit the specific dos and don'ts right before a round of interviews. Reads fast and keeps the concrete bits.
From
mtlynch.io
by Michael Lynch
15 min read
- Ask about the last time, not the general case.
- Vague future promises are worthless.
- Dig into what the problem already costs them.
Open
mtlynch.io →
📄 Article
✓ Link checked
Free
Intermediate
Why we picked it
Turns the vague feeling of product-market fit into a number you can move. Ask users how they would feel if they could no longer use the product, then track the share who say 'very disappointed'. Under 40 percent means keep working. A test you can run on an idea long before you scale it.
From
First Round Review
by Rahul Vohra
~20 min read
- The 40 percent 'very disappointed' benchmark for product-market fit.
- Segment to your high-expectation customers and build for them.
- Make the fit score a metric you improve quarter by quarter.
Open
review.firstround.com →
📄 Article
✓ Link checked
Free
Beginner
Why we picked it
A step-by-step guide to running discovery when you have almost no data, aimed squarely at first-time founders. It is practical on finding people to talk to and asking in a way that surfaces truth rather than encouragement. A solid starting point before your first batch of interviews.
From
First Round Review
by Jeanette Mellinger
15 min read
- Start discovery before you have a product.
- Recruit the right people to talk to.
- Ask so customers can safely tell you no.
Open
review.firstround.com →
Why we picked it
A former Stripe and Twitter operator, now an investor, on why, when, and how to interview customers. Practical and concise on structuring conversations around behaviour, and a good bridge between Steve Blank's philosophy and your next call. Free and quick.
From
Uncork Capital (Medium)
by Amy Saper
12 min read
- Interview about behaviour, not hypotheticals.
- Get out and talk before you build.
- Probe for the emotion behind the problem.
Open
medium.com →
