freeCodeCamp.org

Dropdowns are helpful little menus that let you show more options without cluttering your screen. They're super useful in websites and apps - and @NoDevAjay shows you how to build one here. He'll walk you through the code and show you how to use shadcn/ui components to simplify…

LLMs are pretty impressive tools - but on their own, they can't "remember" anything. That's where vector stores come in and enhance their capabilities. In this article, Manish explains what vector stores are and how they work, teaches you about embeddings, and more.…

If you're building AI apps, you'll want to make sure they're secure. And in this course, Robert teaches you how to build security right into the apps as you go. You'll learn about how securing AI apps is different from regular apps, how to identify potential weaknesses, how to…

If you're building an app or API that has to respond quickly, caching can really help. Instead of the server having to fetch the same data again and again, you store that data in memory. In this guide, Manish explains how in-memory caching works in Redis & walks you through…

Today's coding challenge: an HTML Tag Stripper. You'll get a string of HTML code, and you'll need to remove the tags and return the plain text context. Check it out on the freeCodeCamp mobile app.

Contributing to open source is a great way to give back to a tool or product you use and enjoy. But other responsibilities can get in the way, and it's easy to fall out of the habit. To help you out, Tooba shares tips for building a sustainable open source contribution routine.…

Laravel is a popular PHP web dev framework known for its helpful built-in features and dev-friendly tools. And in this course, you'll learn how to use it to build a fully-featured Medium clone. You'll learn about models, migrations, Blade templating, components, form…

When you're building an app, you'll often need a way to send and get back data between your app & a server. And using a REST API is a great way to do this. In this tutorial, @_udemezue teaches you how to build a REST API in Django using the Django Rest Framework.…

The FARM stack combines 3 powerful tools for building modern web apps: FastAPI, React, and MongoDB. In this course, @beaucarnes teaches you how to use them to build a TODO app. You'll learn about the stack, then use NGINX & Docker to deploy your app. freecodecamp.org/news/use-the-f…

Productivity, like so many things, is a skill that you can improve. In this course, Fatos covers some often-overlooked techniques to help you be more productive. He discusses value addition, clarity, goal-setting, motivation, time management, and more.…

Building a word search game is a great way to practice some key web development skills. And in this interactive tutorial, @PlaybackPress walks you through the process. You'll use HTML, CSS, and JavaScript and learn about Trie data structures, recursion, building out the UI, and…

Here's today's coding challenge: string count. Go solve it on the freeCodeCamp mobile app.

If you want to build a robust web app, you'd traditionally have to worry about managing tons of infrastructure. But with a serverless architecture, you can just focus on your app code. In this handbook, @POnukwili explains how serverless works & walks you through publishing a…

Grafana is an open-source data analytics and visualzation tool that can help you wrangle your data. And in this tutorial, @LifeofDanEL shows you how to use it. You'll fetch solar data from Home Assistant, send it to InfluxDB, and customize a Grafana-based monitoring dashboard.…

When you're coding an app, you'll likely introduce a few bugs or make a mistake here or there. So you'll need to be able to handle these errors in a graceful way. In this handbook, @tapasadhikary teaches you a bunch of helpful debugging and error handling techniques you can…

Building a custom chatbot can be tricky, especially if you want to keep the info private & efficient. So here, @atuo_elabonga teaches you how to create a local Retrieval-Augmented Generation application using Ollama & ChromaDB in R. By the end, you'll have a Shiny interface for…

In 1958, Frank Rosenblatt built the first perceptron. It's basically the ancestor of all neural networks. And in this tutorial, @PlaybackPress recreates that experiment in C++ to help you learn ML fundamentals. You’ll walk through a rule-based solution and then see a learning…

Continuous Integration and Continuous Delivery let you quickly update your code & deploy your apps. And in this tutorial, @chidiadi01 teaches you how to use GitHub Actions to build a CI/CD pipeline. You'll learn key GitHub actions concepts, the phases of the CI/CD process, &…

For today's coding challenge, you'll need to convert 24-hour format time to 12-hour format. 🕚 Give it a shot on the freeCodeCamp mobile app.

React Native is a powerful tool that helps you build cross-platform mobile apps. And in this course, you'll learn how to use it. You'll learn about navigation, data storage, dynamic routing, and more while building a couple apps. freecodecamp.org/news/mobile-ap…