Freecodecamp

Our mission: to help people learn to code for free. We accomplish this by creating thousands of videos, articles, and interactive coding lessons - all freely available to the public. We also have thousands of freeCodeCamp study groups around the world.

Udemy

We help organizations of all types and sizes prepare for the path ahead — wherever it leads. Our curated collection of business and technical courses help companies, governments, and nonprofits go further by placing learning at the center of their strategies.

W3Schools

W3Schools is optimized for learning, testing, and training. Examples might be simplified to improve reading and basic understanding. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.