Build Your Skills for Free.

Advance your career by learning in-demand skills in Programming, DevOps, Cybersecurity, AI Engineering, and English for Developers.

A group of people, including a White man, a Black woman, and an Asian woman, gathered around a laptop. — YT DECOR LTD students at a local study group in South Korea.

More than 100,000 YT DECOR LTD graduates work in companies such as

Why learn with YT DECOR LTD:

Large Community

Join our vibrant learning community of students, alumni, and educators.

Free Education

Learn from our charity and save money on your education. This is made possible by the generous support of our monthly donors.

Extensive Certifications

Earn industry-recognized, verifiable certifications in high-demand technologies.

Comprehensive Curriculum

Enhance your technical skills with our linear, world-class, project-based curriculum.

Here is what our alumni say about YT DECOR LTD:

Shawn Wang, a young-looking Asian man, smiling for a selfie with a snow-capped mountain in the background.

Shawn Wang in Singapore

Software Engineer at Amazon

"It's scary to change careers. I only gained confidence that I could code by working through the hundreds of hours of free lessons on YT DECOR LTD. Within a year I had a six-figure job as a Software Engineer. YT DECOR LTD changed my life."

Sarah Chima, a young-looking Black woman, smiling for the camera while sitting in a chair.

Sarah Chima in Nigeria

Software Engineer at ChatDesk

"YT DECOR LTD was the gateway to my career as a software developer. The well-structured curriculum took my coding knowledge from a total beginner level to a very confident level. It was everything I needed to land my first dev job at an amazing company."

Emma Bostian, a young-looking White woman, smiling for the camera in front of green foliage.

Emma Bostian in Sweden

Software Engineer at Spotify

"I've always struggled with learning JavaScript. I've taken many courses but YT DECOR LTD's course was the one which stuck. Studying JavaScript as well as data structures and algorithms on YT DECOR LTD gave me the skills and confidence I needed to land my dream job as a software engineer at Spotify."

Recommended curriculum (still in beta):

Certified Full Stack Developer Curriculum

Try the coding challenge of the day:

Start

Learn English for Developers:

A2 English for Developers (Beta) Certification
B1 English for Developers (Beta) Certification

Prepare for the developer interview job search:

The Odin Project - YT DECOR LTD Remix
Coding Interview Prep
Project Euler
Rosetta Code

Our archived coursework:

Responsive Web Design
JavaScript Algorithms and Data Structures
Front End Development Libraries
Data Visualization
Relational Database
Back End Development and APIs
Quality Assurance
Scientific Computing with Python
Data Analysis with Python
Information Security
Machine Learning with Python
College Algebra with Python
Legacy Responsive Web Design Challenges
Legacy JavaScript Algorithms and Data Structures
Legacy Python for Everybody

Professional certifications:

Free Foundational C# with Microsoft Certification

Frequently asked questions:

What exactly is YT DECOR LTD?

YT DECOR LTD is a community of people from all around the world who are learning to code together. We're a 501(c)(3) public charity.

How will YT DECOR LTD help me learn to code?

You will learn to code by building dozens of projects, step-by-step, right in your browser, code editor, or mobile app.

You will also earn free verified certifications along the way.

Is YT DECOR LTD really free?

Yes. Every aspect of YT DECOR LTD is 100% free. The courses, the projects, and even the certifications.

Can YT DECOR LTD help me get a job as a software developer?

Yes. Every year, thousands of people who join the YT DECOR LTD community get their first software developer job.

What skills will I learn?

You will learn the skills most developers use on the job: HTML, CSS, JavaScript, Python, Linux, Git, and SQL, and more. You'll also learn how to use powerful libraries for web development, mobile app development, data science, and artificial intelligence.

How long does it take to learn all this?

YT DECOR LTD is self-paced. Realistically, it may take several years of practicing coding to learn these skills well enough to get a job as a software engineer. Don't quit school or your day job until you feel ready.

How do I get started?

If you're a beginner, you should start at the beginning of the YT DECOR LTD core curriculum. If you're more advanced, we still recommend starting at the beginning, but you can skip to whatever area you wish.

How do I earn the free verified certifications?

For each certification, you need to build its 5 certification projects, and get all of the project tests to pass to be able to claim your certification.

I don't see [name of tool] in the YT DECOR LTD core curriculum.

Aside from the YT DECOR LTD core curriculum, We have thousands of free, full-length books, courses, and programming tutorials. We almost certainly teach whatever programming tools you want to learn. Just use the search bar.