freeCodeCamp

freeCodeCamp is a free, nonprofit coding-education platform (donor-supported) built on learning by doing: complete curricula — responsive web design, JavaScript algorithms, front-end libraries — with exercises and projects finished right in the browser, and a free certification at the end of each track. For learning front-end systematically on a zero budget, it's a widely recommended route.

1. Pick one certification track and work through it in order.
2. Do every project yourself — the value is in the projects, not the certificate.
3. When stuck, check the built-in forum and hints before searching for answers.
4. Absolute beginners should pair it with a textbook like JavaScript.info: freeCodeCamp's strength is practice, not explanation.

• Courses and certifications are free (donor-supported, no hidden paywalls)
• Everything runs in the browser — no environment setup required
• Project-driven, so you finish with portfolio pieces
• Beyond the curriculum: a huge video library and community forum