</>Beginner
Web Development · Beginner
HTML and CSS Essentials
Build modern, responsive websites from scratch using semantic HTML5 and clean CSS3, and publish your work online.
Start learning
New lessons added every week
Learn Python by building real things.
Clear, step-by-step courses in every major programming language and tech skill. Each lesson has worked examples, exercises with solutions, an assignment and a quiz, so you finish with skills and projects you can show.
1courses
500+hands-on lessons
100%learn at your pace
</>Web Development
PyPython
JSJavaScript
JvJava
C++C++
C#C#
GoGo
RsRust
PhpPHP
TSTypeScript
SQLSQL
KtKotlin
SwSwift
Languages & tech
Every language you want to learn
From your first line of Python to systems programming in Rust. Pick a language and follow a clear path from beginner to job-ready.
1courses
500+hands-on lessons
1languages & topics
Freeto start learning today
Why it works
Built so you actually finish
Reading is not enough. Every lesson makes you write code.
</>
Worked examples
See the idea in real code first, with the exact output explained line by line.
✎
Exercises with solutions
Practise right away. Stuck? Open a hint, then the full solution and explanation.
⚑
Assignments and projects
Combine what you learned into small programs, and finish each course with a portfolio project.
✓
Quizzes and certificates
Check your understanding as you go and earn a verifiable certificate when you finish.
⇢
Clear learning paths
Not sure what to learn next? Follow a path and always know your next step.
☾
Light on data
Fast pages, free tools and listen-to-lesson audio, so it works on a phone and a small data plan.
Course catalog
1 publishedAvailable courses
How it works
From zero to certificate in four steps
Pick a path
Choose a language or a goal. We show you the courses in the right order.
Learn by doing
Read a short lesson, run the examples, then solve the exercises yourself.
Build and submit
Finish assignments and a final project, and get feedback on your work.
Get certified
Pass the quizzes, complete the course and share a certificate anyone can verify.
FAQ
Questions
Do I need experience?
No. Beginner courses assume nothing and start with a program running in the first lesson. Intermediate and advanced courses say clearly what you should know first.
What do I need to start?
A phone or computer and an internet connection. We point you to free tools and browser-based playgrounds, so you do not need to buy software.
How much does it cost?
It is free right now. Create an account and start learning.
Do I get a certificate?
Yes. Complete every lesson and pass every quiz in a course and you receive a printable certificate with a public verification page.
Your first lesson takes ten minutes.
Pick a language, write your first program today, and keep going one lesson at a time.
Start learning free