Express

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

Learn how npm manages JavaScript project dependencies, scripts, versions, and lockfiles. Build a practical Node.js project and understand package.json, npm install, npm scripts, devDependencies, and package-lock.json.

Learn how Nmap port scanning works by running practical scans against a local machine and an authorized test target. Understand open, closed, and filtered ports, service detection, useful scan options, and how to turn Nmap output into actionable security information.

Build a real sentiment analysis application with Python and Hugging Face Transformers. Learn how pretrained NLP models work, run inference locally, interpret confidence scores, process multiple reviews, expose the model through an API, and understand when sentiment models can fail.

Already have a Node.js API and wondering whether it can run without a traditional server? Learn how to move a small API endpoint to AWS Lambda, expose it through API Gateway, handle environment variables, structure the handler, and avoid common serverless mistakes.

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.