📖 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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Freemium
Beginner
Why we picked it
Todd Jackson studied how dozens of now-large companies validated their very first idea. The pattern that repeats: deliver the outcome by hand, talk to real users, and watch for genuine emotion. A polite 'that's cool' is a no. Strong reactions are the signal you want.
From
Lenny's Newsletter
by Todd Jackson
~15 min read
- Manual delivery beats a survey for early signal.
- Look for strong emotion, not politeness.
- Great ideas usually start from a problem you have lived.
Open
lennysnewsletter.com →
📄 Article
✓ Link checked
Freemium
Intermediate
Why we picked it
If you are selling to companies rather than consumers, this is the specific playbook. Four concrete ways founders got signal before building, from doing the job by hand for one customer to interviewing dozens of potential users first.
From
Lenny's Newsletter
by Lenny Rachitsky
~12 min read
- Do the job by hand for one real customer before automating.
- Interview a wide set of potential users before committing.
- B2B signal looks different from consumer signal.
Open
lennysnewsletter.com →
📖 Book
✓ Link checked
Paid
Beginner
Why we picked it
Ries gives you a working method for reading weak signals instead of guessing: build a small test, measure how real people respond, and learn fast enough to change course before a year is gone. Its most useful idea for this question is validated learning and the pivot-or-persevere call, a concrete way to decide whether an idea is worth continuing. Read it as a discipline for catching a dead-end early, not as a growth-hacking manual.
From
theleanstartup.com
by Eric Ries
~330 pages
- Validated learning means progress is measured by what you have actually confirmed with customers, not by how much you have built.
- The build-measure-learn loop is meant to shorten the time between an assumption and honest feedback on it.
- Pivot or persevere is a scheduled, evidence-based decision, so you are not drifting on an idea by default.
Open
theleanstartup.com →
📖 Book
✓ Link checked
Paid
Beginner
Why we picked it
Savoia, who led early Google AdWords, argues most ideas fail because nobody wanted them, and teaches pretotyping: cheap experiments that generate your own data on real demand before you build. You get concrete tactics like the fake-door and the mechanical-turk test, plus a way to demand skin-in-the-game commitment rather than opinions. Practical for anyone who wants a test that can prove them wrong.
From
Alberto Savoia
by Alberto Savoia
~250 pages
- Collect your own data on real behaviour instead of trusting opinions
- Pretotype the idea to test demand before you build a prototype
- Measure commitments like a signup or a payment, not verbal enthusiasm
Open
albertosavoia.com →
✍️ Essay
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Free
Intermediate
Why we picked it
A sharp, contrarian read that keeps you honest about what a landing page test can and cannot prove. Hillman argues a fake button or empty signup can mislead you if you have not first understood real behaviour and pain. Worth reading alongside the pro-landing-page pieces so you do not fool yourself with a green vanity metric.
From
Stacking the Bricks
by Alex Hillman
~12 min read
- A signup is not the same as someone who will actually pay
- Understand real customer behaviour before you run a fake test
- Validation without demand research can hand you a false positive
Open
stackingthebricks.com →
📄 Article
✓ Link checked
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 →
📄 Article
✓ Link checked
Free
Beginner
Why we picked it
The two ways to fake a product while you test real demand. Do the work by hand in the open (concierge), or hide the manual work behind a front so users think it is automated (Wizard of Oz, the way Zappos started). Clear examples of when each one fits.
From
LogRocket
~12 min read
- Concierge is transparent, Wizard of Oz is hidden.
- Both let you sell before you build.
- Match the method to what you are unsure about.
Open
blog.logrocket.com →
📄 Article
✓ Link checked
Free
Beginner
Why we picked it
A clean, practical playbook for the mechanics: where to place the door, what to measure, and how to avoid annoying the people who walk through it. It covers the in product version (a button for a feature you have not built) alongside the standalone landing page, so you see both shapes of the test. Good for turning the concept into a concrete plan you can ship this week.
From
Learning Loop
~12 min read
- The door can be a button inside an existing product, not only a new page
- Decide your success metric and sample size before you launch
- Show a graceful coming soon message so testers do not feel tricked
Open
learningloop.io →
📄 Article
✓ Link checked
Free
Intermediate
Why we picked it
A tactical, budget-specific walkthrough of running a real landing-page test with a small paid-traffic spend so your numbers are not just friends and family. It covers building the page, driving qualified traffic, and reading conversion honestly. Practical when you want a concrete recipe and rough benchmarks for what a passing test looks like.
From
GrowthMentor
by Foti Panagiotakopoulos
15 min read
- Send paid, qualified traffic so results are not skewed by friends
- A tiny ad budget is enough to get a real read
- Judge the conversion rate against a threshold you set upfront
Open
growthmentor.com →
Why we picked it
The permission slip to recruit users by hand, do things manually, and deliver 'insanely great' experiences to your first few customers. The cheapest, most honest way to validate demand is to go get it one person at a time.
From
paulgraham.com
by Paul Graham
~15 min read
- Recruit your first users manually, don't wait for them to come.
- A tiny group of users who love you beats a big group who like you.
- Manual, unscalable effort early is a feature, not a failure.
Open
paulgraham.com →
Why we picked it
This is the founder essay that made the case for validating before you build, from the person who did it with Buffer. Gascoigne frames the no-code or landing page MVP not as a shortcut to a product, but as a way to learn whether anyone actually wants the thing, which is exactly the stance this question takes. His honest point is that 120 signups plus real conversations taught him more than any polished build would have.
From
Medium (Joel Gascoigne, co-founder of Buffer)
by Joel Gascoigne
- The goal of a no-code or landing page MVP is validated learning, not vanity signups: talk to the people who respond, do not just count emails.
- Anything can be your MVP as long as you are genuinely testing demand before committing to a full build.
- Buffer got only 120 signups in seven weeks, but the direct conversations proved real interest and led to paying customers at launch.
Open
medium.com →
