1. How Software Actually Runs
From the text you type to electrons doing work
The journey of one line of code
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The curriculum
7 tracks, 42 modules, in the order they are meant to be taken. The 7 free preview modules below are fully playable — the animated diagram on this page is the same one paying learners work through.
1. Foundations
BeginnerHow software actually runs, and the building blocks of every program you'll ever write.
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2. Programming Building Blocks
Variables, control flow, and functions — the grammar of every language
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3. Thinking in Data
Arrays, objects and JSON — your general ledger for the digital world
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4. The Command Line
The one interface that composes, scripts, and never changes out from under you
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5. How the Internet Works
Everything between the browser and the server — DNS, TCP, TLS, and the anatomy of one request
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6. Debugging as a Discipline
A repeatable method, not luck — reproduce, read, isolate, and change one thing at a time
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2. Core Engineering
Beginner → IntermediateData structures, algorithmic thinking, version control and testing — the craft under the craft.
1. Data Structures That Matter
Stacks, queues, hash maps and trees — and when each one wins
Watch the same four jobs flow through a stack and a queue
STACK · LIFO · exit at top ↑
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QUEUE · FIFO · exit at front →
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1
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2. Algorithms & Big-O, Practically
Why some code stays fast at 10,000 records and some collapses
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3. Version Control & Testing
Git as your audit trail; tests as your internal controls
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4. Recursion & Trees in Practice
A function that calls itself, the structure it was made for, and when a loop is plainer
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5. Concurrency Basics
Doing more than one thing at once without the folklore — sync vs async, the event loop, and the race
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6. Reading Other People's Code
The skill nobody teaches and every professional needs — comprehending code you didn't write
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3. Full-Stack Web
IntermediateThe request lifecycle, React, APIs and databases — your working stack, understood deeply.
1. The Request Lifecycle
What actually happens in the 300ms after a user taps a button
One tap → one response: the full round trip
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2. React: State Drives the Screen
Components, props, state — and the render cycle that ties them together
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3. Backend, APIs & Databases
REST design, SQL thinking, and why indexes change everything
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4. Auth, End to End
What logging in actually is — session, cookie, hash and the round trip a single user makes to sign in
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5. File Uploads & Storage
The deceptively hard feature — multipart, server-side validation, signed URLs and serving files back safely
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6. Forms, Validation and Error States
The engineering of a form that doesn't punish people — controlled inputs, dual validation and error handling in code
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4. System Design & Architecture
Intermediate → AdvancedScaling, data at scale, and event-driven architecture — including the ledger pattern you already use.
1. Scaling Fundamentals
Vertical vs horizontal, load balancers, and why stateless wins
Horizontal scaling: a load balancer spreading traffic
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2. Data at Scale
Caching, replication, and the trade-offs behind every fast system
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3. Event-Driven Architecture & the Ledger Pattern
Immutable events, projections, and queues — double-entry thinking for systems
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4. Data Modelling That Survives Contact
Entities, keys and constraints — why a schema that doesn't reconcile is a set of books that doesn't balance
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5. Changing a Live Database
Expand, backfill, contract — schema evolution without downtime or data loss
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6. Idempotency, Retries and Exactly-Once
Networks fail after the work is done — building safety into the retry, using payments as the example
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5. Business Process Digitization
AppliedReengineering processes and translating them into software — where your accounting instincts become an unfair advantage.
1. Business Process Reengineering 101
Don't pave the cowpaths — redesign the process, then digitise
As-is vs to-be: a purchase approval, reengineered
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2. From Process Map to Software
Actors, states and events — the translation layer between BPR and code
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3. Automation & Human-in-the-Loop
Approval gates, notifications, and audit trails that clients trust
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4. Reporting and Reconciliation
Why two reports disagree, and how to build numbers people will sign their name to
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5. Compliance, Audit and Retention
Building software for work that has to answer to somebody
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6. Getting Off Spreadsheets
Migration and cutover — the change-management project wearing an engineering costume
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6. Design & Product
AppliedWhy some products feel world-class and most don't — the craft layer AI generates badly and users judge instantly.
1. Why Your App Looks Amateur
Spacing, type and colour as a system — most bad design is inconsistency, not bad taste
One base unit cascading into every screen you ship
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2. The Paths Nobody Demos
Empty, loading, error and success — the four states AI-generated code always omits
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3. Taste Is Mostly Editing
Deciding what to build, what to refuse, and when to stop
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4. The First Five Minutes
Onboarding and activation — where the value proposition becomes real or is exposed as a claim
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5. Information Architecture
Naming, grouping and the list view — how people build a mental model of your product
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6. The Words Are the Interface
Microcopy — the cheapest quality upgrade available to any software product
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7. Advanced & AI-Native
AdvancedSecurity, DevOps and AI-native engineering — shipping systems people can bet a business on.
1. Security Essentials
Authentication, authorization, and the mistakes that sink products
Two locked doors: authn, then authz, on every request
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2. DevOps & CI/CD
Environments, pipelines, and knowing your system is healthy
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3. AI-Native Engineering
LLMs as components: prompts, RAG, agents, and cost discipline
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4. Auth, Sessions and Multi-Tenancy
Who you are, what you may do, and proving the database refuses everyone else
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5. Secrets, Config and Supply Chain
What must never reach the browser, and what you inherited the moment you installed that package
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6. Reviewing AI-Generated Code
The constraint has moved from writing code to judging it
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Unlock every module
All-access opens all 42 modules from $24/mo and includes whatever is added while you are subscribed — access ends when you cancel. Or take a single module for $39, or lifetime access for $599 once, both of which are permanent.
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