freeCodeCamp

freecodecamp.org

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A free, self-paced coding curriculum covering web development, data science, and machine learning — with certifications and a large community forum.

Why it is useful

One of the most complete free paths to job-ready web development skills — the curriculum covers HTML, CSS, JavaScript, React, Node, Python, and data science without requiring any payment. The project-based certifications are substantial enough to demonstrate real competence, and the forum has millions of active members available to help. Over 40,000 people have gotten developer jobs after completing it.