An Intrusion Detection System acts like a security camera for your network. And in this in-depth tutorial, @chairahalkar teaches you how to build a real-time IDS with Python. It'll alert you to any potential cyber attacks and security breaches so you can keep your network safe. freecodecamp.org/news/build-…

For today's coding challenge, you'll get a positive integer and you'll need to return a string with all the integers from 1 up to (and including) your integer. In numerical order. So like if you're given 5, you'll need to return "12345". Check it out on the freeCodeCamp mobile app.

Open source isn't just about the code. It's a community of contributors and maintainers coming together to build software. In this handbook, @AbdulTa62185243 goes over practical steps to help you find projects, make meaningful contributions, and grow your career. freecodecamp.org/news/open-s…

Running LLMs locally has a lot of advantages. Like, it gives you access to AI capabilities offline and ensures data privacy, all without cloud costs. In this in-depth tutorial, @KraneOliver shows you how to set up, use, and customize popular models locally with Ollama. freecodecamp.org/news/run-an…

If you get a context-related Flutter error, it's easy to just look up an answer on Stack Overflow. But if you don't really understand the three trees Flutter is built on, and what BuildContext is, you'll just keep googling. Here, @GiduduNicowalte gives you the guide he wishes he'd had to help you truly comprehend these errors. freecodecamp.org/news/how-fl…

Moving an LLM from prototype to production can introduce many security, privacy, and reliability issues. So Chidiebere is here to help you learn about and build a solid AI guardrail system. You'll build defensive layers with Python, prevent prompt injection, manage data access, and more. freecodecamp.org/news/how-to…

Lots of web apps use badges for notifications, status labels, and so on. But a boring old static badge isn't enough these days. So adding some fun animations can really help. In this tutorial, @gupta05_vaibhav teaches you how to build an animated “success” badge using shadcn/ui, Tailwind CSS, and Framer Motion. freecodecamp.org/news/how-to…

For today's coding challenge, you'll get an integer number of seconds, and you'll need to return a string representing that same duration in the format "H:MM:SS". There are rules, of course. And you can find them (and the challenge) on the freeCodeCamp mobile app.

Small LLMs can be super useful when they're trained for a specific classroom task. In this guide, Srishti shows you how to teach one to suggest creative K12 project ideas. You'll build a Wikipedia-based dataset, filter unsafe content, fine-tune with LoRA, add RAG, and integrate the model into an educational app. freecodecamp.org/news/how-to…

Flutter apps don't usually become hard to scale because of UI complexity alone. They become hard to scale when features, state, navigation, and infra concerns start blending together. In this guide, @enthusiastDev teaches you how to structure large Flutter apps with feature folders, presentation/domain/data layers, scoped state, and other helpful features. freecodecamp.org/news/how-to…

Automation helps you and your team eliminate repetitive work and focus on creative or strategic tasks. And there are various tools that help you automate things more effectively. In this beginner-friendly guide, @manishmshiva teaches you how build and use your own automation workflows using open source n8n. freecodecamp.org/news/a-begi…

Azure Repos can get messy fast as teams, services, and pipelines multiply. In this guide, @casweb_dev shows how to organize repositories based on ownership and business boundaries. You'll learn about naming standards, branch policies, RBAC, Terraform provisioning, Git LFS, shallow cloning, and more. freecodecamp.org/news/how-to…

Your browser history shows where you went, but it doesn't inherently show what you were trying to do. In this tutorial, @wani_shola teaches you how to build a local-first Chrome extension that maps browsing history into intent threads. You'll use Manifest V3, IndexedDB, clustering, scoring, and a React dashboard, with the option to add Claude labeling, context.dev grounding, + an AI assistant. freecodecamp.org/news/how-to…

As a web developer, you'll likely need to use APIs in your projects. And if those APIs aren't well-documented, it might be hard to figure out how they work. In this article, @Derekvibe26 explains how to write good API documentation and covers key features & best practices. freecodecamp.org/news/how-to…

For today's coding challenge, you'll get a string representing a DNA sequence. You'll need to return its complementary strand (and that's compLEmentary, not compLImentary) using certain rules. Check it out on the freeCodeCamp mobile app.

If you want to run an LLM, you don't have to rely on cloud-based APIs anymore - you can do it right on your local machine. And in this tutorial, @chairahalkar helps you build your own local AI agent. You'll use the Qwen 3 family of LLMs along with Ollama which simplifies running LLMs locally. freecodecamp.org/news/build-…

If you want to stay up to date on the latest AI and Machine Learning research, reading academic papers can help. But they can be a bit intimidating and hard to understand sometimes. In this course, you'll learn how to approach and understand the theory, math, and structure in academic papers. freecodecamp.org/news/unders…

AI Engineers design, build, and deploy AI models and systems to solve complex real-world problems. And if you want to get into the field, this handbook is for you. In it, @tatevkaren7 discusses the skills you should have, shares tips for getting started, and goes through use cases for AI tools & technologies. freecodecamp.org/news/the-ai…

If you're an aspiring Data Scientist, Data Science competitions can help improve your skills. And this course teaches you about Kaggle, a popular competition platform & DS community. It covers picking competitions, feature engineering, selecting a model, & more. freecodecamp.org/news/improv…

Potential employers may want to know that you have solid Kubernetes skills. Well, to show them you do, you can earn the Certified Kubernetes Administrator cert. And this course helps you study. In it, @beaucarnes covers cluster architecture, workloads and scheduling, networking, storage, and more with tons of demos. freecodecamp.org/news/prepar…