Web Development

Learn the React fundamentals developers actually use, including components, JSX, props, state, events, lists, forms, Hooks, API integration, and reusable UI patterns.

Learn how to build secure direct-to-S3 file uploads using presigned URLs. This practical tutorial shows how your backend can authorize an upload while the browser sends the file directly to Amazon S3.

Learn how developers use Chrome DevTools to inspect HTML and CSS, debug JavaScript, analyze API requests, troubleshoot browser issues, and investigate website performance.

Learn how database indexes work, why they make queries faster, when to create them, and how poor indexing can increase storage and write costs.

Master the JavaScript concepts that matter most for frontend development, from variables and functions to closures, promises, async/await, DOM manipulation, and modern JavaScript patterns.

Learn how REST APIs work, how HTTP methods, endpoints, status codes, JSON, authentication, and API requests fit together, with practical examples for developers.