4 resources from Steve Blank we point founders to, and the questions each answers.
📖 Book
✓ Link checkedPaidIntermediate
Why we picked it
This is the book that named customer development and, indirectly, launched the Lean Startup movement. Its examples lean heavily enterprise (procurement cycles, multiple decision makers, solution selling), which makes it the strongest single read for someone validating a B2B idea rather than a consumer app. Treat it as the foundational playbook: dense and dated in places, but the discovery-then-validation spine still holds up.
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.
Why we picked it
A two-minute animation showing why building before talking to customers wastes months. Useful to send a cofounder who wants to skip discovery and start coding. Fast, memorable, and free.
Why we picked it
Blank's core rule is that there are no facts inside your building, so a disagreement resolved at your desk is not really resolved. His customer discovery method gives you the scientific loop of stating a hypothesis, testing it with real customers, and validating, invalidating, or modifying it. That loop is the machine that turns a stubborn cofounder argument into evidence.
