Free courses
Learn by building one real repository
Each course builds a single codebase one lesson at a time, and every lesson quotes the exact code that runs. No card, no upsell. We only ask for an email so your progress follows you.
- Live
Master Security in Frontend Applications
Learn XSS, CSRF, exploits, spoofing, and secure coding across React, Vue, Angular, and Vanilla JS. Free for waitlist members.
7 modules · 44 lessons · Free
Start learning free - Live
Master AI Agents in Production
Build a travel planner run by AI models. Keep it running when workers crash, suppliers fail, and the model quotes a price no search returned. 46 free lessons in one real repo.
7 modules · 46 lessons · Free
Start learning free