Object-oriented programming is one of the most widely-used programming paradigms in software development. And here, Lucas shows you how it works in TypeScript. You'll learn key TS language features, then see how they give rise to the four pillars of OOP. www.freecodecamp.org/news/learn-o...

If you want to improve your coding skills, try comparing & contrasting similar code. In this in-depth guide, Evaristo walks you through 5 different versions of a Rock, Paper, Scissors game in JavaScript. You'll use System Block Diagrams to analyze each project. www.freecodecamp.org/news/how-to-...

These days, applications can get pretty complex - and this can cause compatibility issues across OSs/environments. This is where Docker containers can help. In this guide, Oluwatobi explains how Docker works & walks you through containerizing a Node.js app. www.freecodecamp.org/news/contain...

When you're preparing for technical interviews, you should work on algorithms & data structures. And many devs use LeetCode to help them study. In this course, you'll work through the Neetcode 150 – the 150 most essential LeetCode problems – to hone your skills. www.freecodecamp.org/news/prepare...

When you and your team are just trying to finish a feature, maybe you make a quick fix and say - "we'll fix it later". But then you don't. This is an example of technical debt in your code. Here, Manish explains what it is, why it happens, & how to deal with it. www.freecodecamp.org/news/what-is...

Web components are a set of standardized browser APIs that let you build custom, reusable HTML components. You can use them to create self-contained components that work across frameworks. Here Mark teaches you all about them & how to build an app that uses them. www.freecodecamp.org/news/a-brief...

Generative AI systems can create content based on data they've been trained on. And in this 65-hour bootcamp, you'll learn key GenAI concepts. You'll get hands-on experience with Python data libraries, prompt engineering, model fine-tuning, & AI agents, & more. www.freecodecamp.org/news/free-ge...

If you need to make small updates to your app, you may not want to do a full release. Instead, you can use a tool like Shorebird to make patches and deploy them almost instantly. Here, Anthony explains when to use it to push silent updates in Flutter. www.freecodecamp.org/news/how-to-...

For today's coding challenge, you'll get a string and need to determine if it fits within the allowed number of characters for a social media post. Find it on the freeCodeCamp mobile app.

Named Entity Recognition helps you pick out important terms in text. It can helpful extract meaningful insights for you. Here, Manish teaches you how it works by building a news analyzer that uses a transformer-based NER model to grab data from a live RSS feed. www.freecodecamp.org/news/extract...

Most voice assistants send your voice data to cloud servers before they respond. But you can build your own assistant with open source tools & run everything right on your phone. This gives you more privacy & control - and Surya helps you set it all up here. www.freecodecamp.org/news/private...

You can build your own 3D games that run right in the browser - and this course teaches you how. You'll use Three.js and Blender to build an interactive 3D portfolio site. You'll learn about modeling, object interactions, camera movement, and lots more. www.freecodecamp.org/news/creativ...

The field of Cryptography is all about securing data & communication. In this course, you'll learn the basics like hashing, symmetric & asymmetric encryption, and more. By the end, you'll have built a fully-functioning command line cryptography tool in Python. www.freecodecamp.org/news/cryptog...

Some websites load quickly while others leave you looking at a blank screen - even with fast internet. And this may be because of round-trip time - how long it takes your browser to talk to the server. Here, Chukwudi teaches you how to reduce RTT with Next.js. www.freecodecamp.org/news/how-to-...

Today's coding challenge is all about counting cards. Go see if you can solve it on the freeCodeCamp mobile app.

Event-driven architecture is a powerful way to build scalable, decoupled, & responsive systems. Instead of relying on direct calls between components, these systems communicate using events. In this handbook, Ger teaches you all about how it works. www.freecodecamp.org/news/event-b...

If you're building AI apps, you might be wondering how to structure the logic & connect prompts, memory, tools, & APIs. Well, open-source tools like LangChain + LangGraph can help you out. Manish explains what each tool does & when to use it in your AI projects. www.freecodecamp.org/news/how-to-...

If you've ever wondered how JavaScript runs your code behind the scenes, this one's for you. Shejan explains how the global execution context works, what the temporal dead zone is, & more. You'll also learn about hoisting and what happens in the memory phase. www.freecodecamp.org/news/global-...

You may have noticed that everything in JavaScript acts like an object. And here, Shejan discusses this + how inheritance works, __proto__ vs prototype, & more. By the end, and after a bunch of examples, you'll understand how JavaScript's prototype system works. www.freecodecamp.org/news/how-pro...

You may have learned a lot of algorithms in your programming journey - but do you know why they work how they do? That's what you'll learn in this course. It goes into the mathematical reasoning behind an algorithm's performance & dives deep into some examples. www.freecodecamp.org/news/algorit...

Uploading large files to S3 using single-request methods can be tricky. Network interruptions happen, wasting bandwidth & time, & it gets unreliable as files get bigger. Here, Chisom teaches you how to upload large objects to S3 with AWS CLI multipart upload. www.freecodecamp.org/news/how-to-...

For today's coding challenge, you'll build a program that returns the day of the week given a date. Find it on freeCodeCamp's mobile app.

If you're building a backend app, you'll need to work with a database. And if you're coding in Go, there's an official driver that lets you connect to & interact with MongoDB. Here, Dami walks you through setting it all up & building a simple blog application. www.freecodecamp.org/news/how-to-...

If you want to improve your technical writing, this course is for you. It'll help make your writing more concrete & practical while teaching you to communicate clearly. You'll learn about framing definitions, describing processes, writing formal reports, & more. www.freecodecamp.org/news/improve...

When you're building a website, you'll want it to be responsive & fast. And there are many ways you can optimize a site's performance. In this handbook, Gordon teaches you about server-side rendering, CDNs, caching, file compression, image optimization, & more. www.freecodecamp.org/news/the-fro...

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

The field of Cybersecurity is growing - and no wonder with the ever-present threat of attacks. So if you want to show potential employers you know your stuff, there are some certifications to consider. Here, Manish shares his top cert picks & why they're useful. www.freecodecamp.org/news/top-cyb...

Python package managers let you install and manage dependencies right from your terminal. And uv is a super fast option that you'll learn how to use in this quick guide. You'll install it, use it to set up a project, and learn a bunch of helpful commands, too. www.freecodecamp.org/news/how-to-...

For today's coding challenge, you'll create a matrix builder. Check it out on the freeCodeCamp mobile app.

Flutter is a mobile app development kit that lets you build apps for mobile, web, & desktop with one codebase. In this guide, @PlaybackPress teaches you how to use it. You'll learn Flutter basics, Dart programming language fundamentals, storage options, & more. www.freecodecamp.org/news/mobile-...

The freeCodeCamp community wishes everyone who's celebrating a very Happy Gurpurab!

If you want to learn serverless & microservices architectures, this course is for you. You'll learn to build scalable cloud applications from start to production. The course covers onion architecture, Docker, Azure functions and triggers, and lots more. www.freecodecamp.org/news/serverl...

Automation helps you eliminate repetitive work & focus on creative & strategic tasks. And there are various tools that help you automate things more effectively. In this guide, Manish teaches you how build & use your own automation workflows with open source n8n. www.freecodecamp.org/news/a-begin...

Enterprise-level AI engineering requires some different, more complex skills - and that's what you'll learn in this course. It covers LLM embeddings, RAG, multimodal models, LangChain-powered agents, and more. You'll build an end-to-end app along the way, too. www.freecodecamp.org/news/learn-e...

If you're a Senior Engineer looking to move up, the next role will likely be a Staff Engineer. And in this guide, Shruti shares tips from her own experience of getting promoted to Staff Engineer at PayPal and Slack. She also talks about why you may be stuck. www.freecodecamp.org/news/how-to-...

24 years ago today, Google launched its image search feature. And in today's coding challenge, you'll imitate that feature. Find it on the freeCodeCamp mobile app.

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 guide, Derek explains how to write good API documentation & covers key features & best practices. www.freecodecamp.org/news/how-to-...

If you want to improve your C++ skills, here's a course for you. You'll code in C++ & use the powerful open-source JUCE framework to build an audio plugin. You'll also learn about digital signal processing, how to create a responsive GUI for your plugin, & more. www.freecodecamp.org/news/improve...

If you want to run an LLM, you don't have to rely on cloud-based APIs - you can do it on your local machine. And here, Chaitanya 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. www.freecodecamp.org/news/build-a...

Creating and maintaining documentation can be a pain without helpful tools. In this guide, Rajdeep introduces you to an open source option called docs.page. You'll learn how to configure it, use pre-built components, diagnose errors, publish your docs, & more. www.freecodecamp.org/news/how-to-...

If you want to stay current on the latest AI & ML research, reading academic papers can help. But they can be intimidating & hard to understand at times. In this course, you'll learn how to approach & understand the theory, math, & structure in academic papers. www.freecodecamp.org/news/underst...

Django is a high-level Python web dev framework that lets you build secure, scalable apps. And this crash course teaches you the basics so you can start using it. You'll learn about django-admin & manage.py, the Model-View-Template pattern, how forms work & more. www.freecodecamp.org/news/django-...

Today's coding challenge keeps it pretty straightforward: you'll build a word counter. Check it out on freeCodeCamp's mobile app.

When you build a website, you have 2 choices for how pages are created: statically or dynamically. But if you want the best of both worlds, there's Incremental Static Regeneration. Here, Joan explains how ISR works in Next.js so you can make your websites faster. www.freecodecamp.org/news/how-inc...

Kubernetes is an open source tool that helps you manage your apps in containers. So if you have an app with a bunch of microservices, for example, K8s helps you wrangle them. In this handbook, Prince teaches you about pods, workflows, deployments, & lots more. www.freecodecamp.org/news/learn-k...

Design patterns are solutions to common coding problems that show up often in your projects. Here, Mark explains how some key object-oriented design patterns work in Java. He covers patterns like Strategy, Singleton, Composite, Decorator, State, Observer, & more. www.freecodecamp.org/news/object-...

Flutter and Firebase work well together. And in this handbook, Anthony shows you exactly how. You'll learn how to integrate tons of different Firebase services into your Flutter apps. He walks you through set up to deployment, and everything in between. www.freecodecamp.org/news/how-to-...

When you're hacking on your projects, sometimes you want to put together your own tool stack. Here, Manish shares his picks for the ultimate Indie Hacker stack. He talks about key build tools, hosting & payment options, how to deploy where your users are, & more. www.freecodecamp.org/news/ultimat...

Telehealth lets patiences get certain health care remotely. Since this approach is now so popular, it's helpful for devs to know how to build Telehealth apps. In this in-depth guide, Derek walks you through building one using the Stream Video & Chat SDK in React. www.freecodecamp.org/news/how-to-...

Did you know that on this day in 1988, the first major internet worm started rampaging around the net? For today's coding challenge, given a number of days since the worm was released, you'll determine how many computers were infected. Head over to the freeCodeCamp mobile app to check it out.