Systems, tools, and code
Story-driven tutorials for a working engineer. Each one starts from a real, slow, or broken thing and fixes it one step at a time.
The Nine Protocols Behind Every System Design
IP, TCP, UDP, QUIC, HTTP and its methods, DNS, SSL, and TLS. One short section per protocol, only as deep as system design needs, then all nine at work in a single page load.
ClickHouse for Laravel Developers
Your MySQL reports are slow. This follows one SaaS app from its first slow query to a production analytics system: tables, batch inserts, dedup, sort keys, partitions, joins, time zones, materialized views, and sync.
Matt Pocock's Skills: From Idea to Ship
A tour of all 25 skills in the mattpocock/skills system, taught through one project. Start with a bare coding agent, watch it fail, then add one skill group per part until the whole workflow runs.
ApexYard: Take AI-Built Code the Last Mile
A tour of ApexYard, the open-source SDLC framework that wraps your AI coding agent in the gates, reviews, and receipts of a real engineering org. One AI-built product goes from "works on my laptop" to governed production, one upgrade at a time.
Spec Kit: Make the Spec the Source of Truth
A full tour of GitHub's Spec Kit, the open-source toolkit for Spec-Driven Development with any AI coding agent. One feature built twice, once from a prompt and once from a spec, then one piece of the toolkit added per part until the whole workflow runs.
Three Toolkits, One Desk: Matt's Skills vs ApexYard vs Spec Kit
The companion to the three tutorials above. Maps the layer each system occupies (habits, governance, intent), runs the same four situations through all three, lists what they share, and ends with a decision guide for choosing one or combining them.
What to build, for whom, and how to sell it
Guides and research reports for an engineer who wants to run a business, not only write code for one.
From SaaS Idea to Product-Market Fit
A software engineer's guide to deciding what to build. Markets, niches, finding and ranking problems, customer interviews, competition, distribution, cheap validation experiments, and when to start coding.
AI for HealthTech: From First Principles to Paid Projects
How to walk into a clinic, hospital, or health insurer, find an expensive workflow, decide whether modern AI can fix it, build it safely, prove it works, and get paid. Extra depth on the UAE market.
AIOS for E-commerce: Market, Positioning & Go-to-Market
Market research and a business plan for selling production-grade agentic AI systems to e-commerce companies: competitors, ideal client profile, offer, service menu, delivery playbook, and a solo-founder financial model.
Curricula
Structured study plans built from existing courses.