What Is Product Management, Really?
The job nobody outside the building understands — and most people inside the building get wrong too.
The PM Mindset and What the Job Demands
How senior PMs think differently, the responsibilities you can't delegate, and what it really means to own a product.
The Three Pillars: Business, Tech, and User
Why PMs need to be fluent in all three, how to develop each, and where careers get stuck.
Product Sense — and How to Build It
The mysterious judgment senior PMs seem to have, what it actually consists of, and the practices that develop it.
Discovery vs. Delivery
The two modes every PM works in, why most teams collapse them, and how to do both well at once.
Build, Measure, Learn — Done Honestly
Eric Ries's loop in actual practice, including the parts that look easy on paper and aren't.
Product-Market Fit Is a Feeling You Can Measure
What PMF actually feels like, the signals that tell you you have it, and the trap of declaring it too early.
Product Vision That Survives Contact With Reality
Why most vision statements are decorative, what good ones look like, and how to write yours.
Product Strategy: The Hardest Document You'll Write
Rumelt’s good vs. bad strategy applied to product. Why most product strategies are wishful and how to fix them.
Competitive Analysis That Actually Helps
How to study competitors without becoming them, what to look at, and what to ignore.
Market Sizing Without Lying to Yourself
TAM, SAM, SOM done honestly. Top-down vs. bottom-up. When market sizing is useful and when it's theatre.
Business Models: How Products Make Money
Subscription, transaction, advertising, marketplace, freemium — the trade-offs each one forces.
Pricing Strategy: The Most Underrated Lever
Why most products are mispriced, how to think about willingness to pay, and the mechanics of running pricing experiments.
Go-to-Market: Getting the Product to Its Buyer
April Dunford's positioning, the difference between channels and motions, and why GTM is product work.
Understanding Users: The First Skill
The discipline of treating user understanding as a permanent practice, not a one-time project.
Jobs to Be Done: The Lens That Actually Works
Christensen's framework in practice, the job story format, and the mistakes teams make with it.
Running Customer Interviews That Teach You Something
Why most interviews waste everyone’s time, and how to ask questions that actually reveal how users think.
Surveys: When They Help and When They Mislead
How to use surveys without fooling yourself, why most NPS scores are noise, and what surveys can and can’t tell you.
Usability Testing: Watching Users Struggle
Why five users are usually enough, the questions to never ask, and how to find design problems before they ship.
Personas and Journey Maps: Tools That Either Help or Mislead
Why most personas are useless, when journey maps actually work, and what to use instead.
Product Roadmaps That Don't Lie
Why most roadmaps are works of fiction, how to build one that is honest about uncertainty, and what to put in each section.
Prioritization Frameworks: RICE, MoSCoW, Kano
How to choose what to build next without false precision, when frameworks help, and when they hide the real decision.
OKRs and Goal Setting That Actually Drives Outcomes
How to write OKRs that don't reward sandbagging, why most key results aren't actually outcomes, and what Andy Grove meant.
Writing PRDs That People Actually Read
What goes in a Product Requirements Document, what should be left out, and how to write specs that don’t get ignored.
User Stories and Acceptance Criteria
How to write user stories that engineers can build and designers can design from, and the common pitfalls to avoid.
Estimation and Sizing Work
Why estimates are always wrong, why we still do them, and how to size work in a way that helps without lying.
Backlog Management: Keeping Your List of Work Honest
Why most backlogs become graveyards, how to keep yours alive, and the rituals that actually help.
Design Thinking for Product Managers
How designers actually think, what design thinking is and isn't, and how PMs can use it without pretending to be designers.
Wireframes and Prototypes: Cheap Ways to Test Expensive Ideas
How to use rough sketches and clickable mockups to find problems before code is written, and what fidelity is right when.
Information Architecture: How to Organise What Users See
Why most products feel cluttered, the difference between structure and surface, and what good IA actually looks like.
UX Principles Every PM Should Know
The handful of design principles that explain why some products feel right and others don't, in language PMs can use.
Product Metrics That Matter
Which numbers actually tell you whether the product is working, the difference between vanity and value, and how to choose well.
The North Star Metric: One Number to Rally Around
How to pick the single metric that matters most, why most companies pick it wrong, and how to use it without distorting work.
AARRR: The Pirate Metrics Framework
Dave McClure's classic framework for tracking the user lifecycle, what each stage means, and how to use it well.
A/B Testing: Learning from Real Users at Scale
How to run experiments that produce real answers, why most tests are run badly, and when not to A/B test at all.
Cohort Analysis: Tracking Groups Over Time
Why averages lie, what cohorts reveal that aggregate metrics hide, and how to read retention curves like a PM should.
Funnel Analysis
Where users drop off, why, and how to diagnose conversion problems systematically.
Working With Engineering
How to be the PM engineers actually want to work with, and the mistakes that erode trust.
Working With Designers
Collaboration patterns that produce better products, and the small moves that ruin relationships.
Agile, Scrum, Kanban — Without the Religion
What actually works from each methodology, and what to ignore.
Sprint Ceremonies That Earn Their Time
Standups, planning, retro, demo — how to run them so they help, not hurt.
Launches: How to Ship Without Drama
Soft launches, betas, GA. The mechanics of launching well at every stage.
Bugs and Tech Debt: The Cost of What You Don't See
How to think about quality and debt without sounding like a broken record.
Growth Loops vs. Funnels
Why loops compound and funnels don’t, and how to design products that grow themselves.
Retention and Engagement
Why retention is the highest-leverage metric in product, and what to do about it.
Acquisition Channels: Where Users Actually Come From
Paid, organic, viral, partnerships. The economics and trade-offs of each.
Stakeholder Management
How to keep multiple bosses, partners, and constituencies aligned without losing yourself.
Communication: The Skill That Compounds
Writing, presenting, persuading. Why PMs who write well get further faster.
Influence Without Authority
How to lead teams you don’t manage, the mechanics of soft power, and the long game of credibility.
Career Growth for Product Managers
How PM careers actually progress, what senior leaders evaluate, and the moves that compound.
The Roadmap Is Not a Promise
Why treating the roadmap as a contract quietly destroys trust — and what to call it instead.
Say No by Default
The strongest product muscle is a polite, well-reasoned no. Most PMs never build it.
Your Best Feature Is the One You Didn’t Build
Every feature you ship is a feature you maintain forever. Subtraction is underrated.
Velocity Is Not Progress
Shipping faster is not the same as moving the business. Don’t confuse motion with outcomes.
The Demo Is the Spec
If you can’t demo it, you haven’t defined it. Working software beats a perfect document.
Write the Press Release First
Amazon’s working-backwards trick, and why drafting the launch note clarifies the whole project.
The Metric You Celebrate Is the Metric You Game
Pick the number you reward carefully — your team will optimise it, side effects and all.
Most Meetings Are a Failure of Writing
If a document would have done the job, the meeting was a tax. Write more, meet less.
“Customer-Obsessed” Is Usually a Slogan
Real customer obsession shows up in your calendar, not your company values page.
Ship the Smallest Honest Version
The MVP isn’t the cheapest thing you can build — it’s the smallest thing that tells the truth.
How Many Coffees Does a City Café Sell in a Day?
A bottom-up estimate from seats, turnover, and peak hours — and how to sanity-check it.
How Many Rides Does a Ride-Hailing App Do in NYC Daily?
Sizing daily trips from population, adoption, and trips per active user.
How Much Does a Video Platform Spend on Storage a Year?
Uploads per minute, average file size, retention, and cost per terabyte.
How Many Pizzas Are Sold in a Country Each Day?
A consumption-based estimate from population, frequency, and average order size.
What Revenue Does an Airport Parking Lot Generate?
Spaces, occupancy, average stay, and daily rate — built up from first principles.
How Many Diapers Does a City Use Per Day?
Sizing demand from birth rate, age band, and changes per child per day.
How Many Elevators Are There in a Dense Metro?
Estimating from building stock, floors per building, and elevators per floor band.
How Much Mobile Data Does a Messaging App Process Daily?
Users, messages and media per user, and average payload size.
How Big Is the Electric-Toothbrush Market in a Country?
A replacement-cycle model from households, adoption, and price.
How Many Streaming Subscriptions Exist in a Region?
Sizing subscribers from households, broadband, and subscriptions per home.
Slack: A Failed Game That Became a $27B Tool
How Tiny Speck turned the ashes of Glitch into the fastest-growing workplace product of its era.
Instagram: The Pivot From Burbn to Photos
Why killing a cluttered check-in app and keeping one feature created a billion-dollar product.
Netflix: Cannibalising DVDs to Win Streaming
How a profitable mail business deliberately disrupted itself before someone else could.
Airbnb: The Long Road to Product-Market Fit
Cereal boxes, door-to-door photography, and doing things that don’t scale to find demand.
Superhuman: Engineering Product-Market Fit
How Rahul Vohra turned a fuzzy feeling into a measurable, improvable PMF score.
Figma: The Multiplayer Bet on the Browser
Why a four-year R&D slog on WebGL and real-time collaboration beat incumbents with a head start.
Duolingo: Growth by Streaks and Gamification
How relentless A/B testing of habit loops turned language learning into a daily ritual.
Amazon Prime: The Bet That Built a Flywheel
Why free shipping that looked financially reckless became Amazon’s deepest moat.
Spotify: Discover Weekly and the Personalisation Edge
How a side project using playlists-as-data became one of Spotify’s strongest retention drivers.
Notion: Surviving a Near-Death Rebuild
Why throwing away the codebase and almost running out of money set up the comeback.