Founder guides

Better questions before bigger builds.

A small library for choosing, validating, and testing startup ideas before you spend a month building the wrong thing.

These guides are intentionally narrow. BMB is not trying to be a giant startup encyclopedia. The focus is the messy early stretch where you need a stronger idea, a clearer next test, and fewer false starts.

What we cover

Practical startup validation questions.

The first guides will focus on the questions founders actually ask when they are stuck between ideas, tempted to overbuild, or using ChatGPT as a scratchpad without getting real-world signal.

First guide

Startup idea validation

What validation means, what counts as weak versus strong signal, and how to avoid mistaking opinions for proof.

Live

Decision guide

How to choose a startup idea

A simple way to compare ideas by pain, speed to signal, access to users, founder edge, and next proof step.

Live

AI guide

ChatGPT startup ideas

How to use ChatGPT for thinking without pretending it can prove demand, willingness to pay, or real user behavior.

Live

Proof guide

Validate before building

How to run a lean validation sprint with a landing page, outreach, manual concierge test, or community signal.

Live

Core idea

ChatGPT helps you think. Behavior validates.

BMB's point of view is simple: a good chat can sharpen an idea, but validation starts when someone outside the chat takes a real action. The guides will keep coming back to that line so the advice stays useful, honest, and grounded.