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Live in the app
04
Coming soon
07
Mission per lesson
01
HTMLCSSJavaScriptVibe CodingMachine LearningPythonTypeScriptReactFastAPINestJSRAGAdvanced RAGHTMLCSSJavaScriptVibe CodingMachine LearningPythonTypeScriptReactFastAPINestJSRAGAdvanced RAG
Live in the app

HTML & CSS

Build your first webpage: structure with HTML, style with CSS. Every lesson renders in a real browser. Pick a tag to see what it makes.

localhost · current result

Code Night

Live in the app

JavaScript

Add interaction to your page: variables, events and logic. This button is wired with the same three lines you write in the app.

let score = 0;
button.addEventListener("click", () => {
  score++;
});
0
Live in the app

Say what
you want.

Vibe Coding teaches you to give AI clear instructions, see what changes, and check the result is what you wanted. Drag across the page to compare.

THE GOAL
Visitors can find the date and RSVP without searching

Saturday Skill Workshop. A friendly workshop for neighbours who want to learn together. It happens on Saturday at 10:00 and if you want to come you can reply to this message.

Saturday Skill Workshop

Saturday at 10:00JOIN

A friendly workshop for neighbours who want to learn together.

BEFOREAFTER↔
  1. CHAPTER 01Say what you want4 lessons · REVIEW
  2. CHAPTER 02Give the right contextNext
  3. CHAPTER 03Unlocks in the appLocked
  4. CHAPTER 04Unlocks in the appLocked
Live in the app

Machine
Learning

Ten two-minute lessons: split data, train a model and watch how it improves. Your mission here, like lesson 01: move the boundary until it gets 2 of 3 new points right.

Not yet · drag the boundary

Training points right: 8 of 13

● group A● group B□ new data

On the
roadmap.

Seven paths in the works. They arrive in the app as they're ready, no dates promised.

  • Python
  • TypeScript
  • React
  • FastAPI
  • NestJS
  • RAG
  • Advanced RAG

Start your first path.

T3lem is in beta on iPhone. Join the waitlist and we'll tell you the moment it lands on the App Store.

A hand holding an iPhone open on a T3lem CSS lesson