No distraction between your studies

Turn any YouTube video into a course you actually finish.

Structured lessons, active recall quizzes, interactive note-taking, and personalized placement tests in one distraction-free space.

By the numbers

Real learners, real courses.

1,100+learners signed upFree to start, no card needed
292courses built291 of them free for anyone to join
1,300+hours of YouTubeturned into short, structured lessons
6,900+lessons writtenwith study notes from the video
32,000+quiz questionseach linked to the moment it's explained
172creators' channelsfrom 20-minute talks to full bootcamps

Counted live from Courseyl, updated every hour.

Features

Everything you need to finish that 6-hour playlist.

6h 02m2h 40m
  • JSX basicsKnown
  • Components and propsKnown
  • State with useStateTo learn
  • Effects with useEffectTo learn

This 6-hour course is 2h 40m for you.

A 2-minute placement test finds what you already know and takes those lessons out of your plan.

Watch it, then read it.

Distraction-free video for each lesson, plus study notes Nemotron writes from what was said.

Why does the same prompt give different answers?

The model forgets the promptReplay 3:12 that explains it

Miss one, replay the moment.

Every lesson ends with a quiz. A wrong answer jumps the video to the moment that explains it.

›youtube.com/watch?v=7AMjmCTumuo&list=PL-osiE80TeTs…
Playlists up to 20 hoursNotes + quiz per lessonDay-by-day planPlacement test

Any YouTube video or whole playlist → a course.

Paste the link straight from YouTube. Lesson 1 is ready to watch while the rest is written.

4h course · 2 days

Your pace, every course.

Set your daily time once. Every course splits into days, and skipped lessons drop out.

  1. 1Python
  2. 2Math for ML
  3. 3Machine learning
  4. 4Gen AI
1,240 learners enrolledEnroll in roadmap

Roadmaps: courses from many creators, in stages.

Build your own path and share the link. Anyone with it can enroll and track their own progress.

  • 0:42Attention looks back, never ahead.
  • 2:08MLP blocks hold most of the weights.
  • 5:01Sampling explains different answers.

Notes pinned to the moment.

Write while you watch. Each note keeps its time; click it and the video plays from there.

How it works

From a 6-hour video to a plan you finish.

  1. Paste a video or playlist

    Any YouTube video, or a playlist up to 20 hours. NVIDIA Nemotron plans the lessons and writes study notes and quizzes for each one.

  2. Learn at your pace

    A 2-minute placement test skips what you know. Set 30 to 120 minutes a day and every course splits into days.

  3. Prove it, keep it

    Miss a quiz question and the video jumps to the moment that explains it. Pin notes to any moment, and chain courses into a roadmap.

Learners

People who actually finished.

“I had started that 6-hour React video four times. Courseyl cut it to two and a half hours and I finished in nine days.”
Khushi Agrawal
Product Designer, India
Finished: Python for AI · 3 days
“Getting a question wrong and landing on the exact 40 seconds that explain it is what made it stick.”
Sankhya Siddesh
Developer Success
Finished: Let's Reproduce GPT-2 · 4 days
“No recommendations, no rabbit holes. Thirty minutes a day and a date to finish by.”
Nisarg Thakkar
Backend Developer
Finished: System design basics · 3 days
Start today

Your next course starts today.

Paste a video or playlist and start lesson 1 while the rest of the course builds.