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From choosing a template to creating files, using live preview, and saving your first project—a practical path into CodPen.
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Clear, production-minded articles about JavaScript, TypeScript, React, Next.js, AI-assisted coding, and the CodPen workflow.

From choosing a template to creating files, using live preview, and saving your first project—a practical path into CodPen.
CodPen Blog

Build a small but realistic interface with components, props, and state while learning a clean React project structure.
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Compare the practical tradeoffs in startup speed, maintenance, developer experience, and team size.
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Understand Server and Client Components, routing, metadata, and loading UI through one practical mental model.
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Learn to write precise requests, review diffs, and benefit from AI without handing over control of your project.
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Replace guessing with a repeatable process: reproduce, narrow the scope, and use console and network evidence to find the root cause.
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