Free interactive course
Learn how apps are built. Then build one.
11 modules. 75 minutes. Zero experience needed.
For people who want to build — and for people who work with builders.
Will Melton
CEO, Xponent21
Watch it get built
Will Melton is building 52 apps in 2026 — live on YouTube every Saturday and Sunday. This site was one of them.
Episode 1
Where it started
Latest session
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The eleven modules
Work through them in order the first time. After that, treat it as a reference you can open mid-project.
- Open module
Module 01
The Cloud & Your Project
Where your app actually lives, and what a project really is.
5 min total - Open module
Module 02
Building Tools
Lovable, Cursor, Copilot, VS Code: what each one is for.
7 min total - Open module
Module 03
Anatomy of an Application
Database, views, and components, and how a click travels through them.
8 min total - Open module
Module 04
Interactivity & Logic
A form is never just a form. Watch everything one submit sets off.
9 min total - Open module
Module 05
Connectors & APIs
How your app asks another company's app for something.
8 min total - Open module
Module 06
AI in the Build
AI as a feature inside your app, not just the thing that wrote it.
6 min total - Open module
Module 07
Auth & Security
Proving who someone is, then limiting what they can touch.
7 min total - Open module
Module 08
Payments
Taking money without ever touching a card number.
7 min total - Open module
Module 09
Beyond the Screen
Cameras, sound, motion, and the physical world.
6 min total - Open module
Module 10
Communication & UX
Telling people what happened, and what to do next.
7 min total - Open module
Module 11
SEO Basics
Making it possible for people to find the thing you built.
5 min total
Written for two audiences
For first-time builders and the people who brief them.
No jargon left undefined
Every technical word explained the moment it appears.
Demos, not screenshots
Every concept ships with a demo you can click and break.