This is not a dump of MBA notes. It is a hierarchy. Start with market reality, move into economics and advantage, then learn growth, decisions, and execution. Everything is short, useful, and grounded in actual business situations.
This is the front door. If you only have a few hours, work this order. It gives you the highest decision leverage first.
TL;DR: A great product in a bad market still loses.
Real life: Launching yet another food delivery app sounds exciting until you realize customer switching is easy, margins are thin, and competition is brutal.
TL;DR: Use it to decide whether an industry is attractive before you commit time or capital.
Real life: Airlines are notorious: high fixed costs, heavy competition, little loyalty, and price-sensitive buyers.
TL;DR: If your edge disappears when you stop pushing, it is not a real edge.
Real life: Amazon’s logistics scale is not just “good execution.” It lowers costs and improves speed in a way smaller rivals struggle to match.
TL;DR: If you lose money on each customer, growth makes the problem bigger.
Real life: A startup paying $120 to acquire a customer that only generates $70 in gross profit is not “scaling.” It is accelerating losses.
TL;DR: Revenue minus variable costs tells you whether each sale helps cover the business.
Real life: A product that sells for $50 with $38 of variable cost leaves only $12 to cover fixed costs, overhead, and profit.
TL;DR: Customer value must clearly exceed customer acquisition cost.
Real life: If you spend $300 to win a customer worth $280 gross profit, you bought growth that destroys value.
TL;DR: Customers do not buy products. They hire solutions to make progress.
Real life: People did not hire Uber because they loved maps or cars. They hired it because getting a ride became fast, trackable, and painless.
TL;DR: You have it when a defined group really wants what you built — and proves it through retention, referrals, or repeated use.
Real life: Slack did not win because it had more features than email. Teams kept using it because communication became faster and less painful.
Some people learn best by sequence. Others by category. Use either.
Frameworks are the pieces. Playbooks are how you actually use them.
Market → economics → edge → downside. If one fails badly, stop romanticizing it.
Use Five Forces, pricing power, and unit economics before you convince yourself.
Start from value, test sensitivity, and stop treating price like a vibe.