What advice would you give a 14-year-old learning full-stack development?

Find a mentor if you can, whether that's a teacher, an experienced developer, or someone in a local coding group. Ask specific questions, show what you've built, and be open to feedback. Most people are happy to help someone who is genuinely curious and willing to learn.

Make applications you genuinely want to use or enjoy building. A portfolio is a great project, but at your age you don't need to turn everything into career preparation. Keep experimenting and have fun. Also, try not to rely too heavily on AI-generated code—manual practice with debugging, research, and problem-solving will teach you much more.

Keep up with school and your health too. Programming is easier to sustain when you make time for sleep, exercise, friends, and other interests instead of trying to code every moment.

Consider learning a lower-level language such as C at some point. It is very different from JavaScript and can teach you about memory, performance, and how programs interact with the computer. You don't have to abandon web development; treat it as a way to strengthen your fundamentals.

Focus on understanding how computers and software work under the hood instead of chasing every new framework or buzzword. Build projects that help you learn those fundamentals, and let the technologies follow naturally.