Yalco's Easiest React

Quickly learn TypeScript's syntax and usage with the easiest explanations.

In the AI era, you may not need to know coding, but you must know Git. The easiest and most detailed way to learn Git & GitHub

Through the 25 patterns of OODP, you will learn various ways to design software in an object-oriented manner.

This course makes the core concepts of data structures and algorithms easy to understand through visual metaphors and testing tools. You will gain practical experience by implementing everything from the basics to sorting and searching.

A friendly course that even those who know nothing about coding can follow! The ultimate course that turns working developers into JavaScript experts!

An era where just learning the basics isn't enough to survive. Dig deep and master Java once and for all!

A kind and easy course that even those who know nothing about coding can follow! The ultimate course that turns working developers into HTML & CSS experts!

This course covers the core principles and practical techniques of Node.js that you must know before diving into professional frontend and backend development.

MySQL for non-majors! This lecture quickly skims through essential concepts with brief explanations, then allows you to learn MySQL hands-on by "playing" with examples on the site.

Learn TypeScript syntax and usage quickly with the easiest explanations!

This course covers the essential principles and practical techniques of Node.js that you must know before diving into real-world front-end or back-end development.

Learn React the Easiest and Fastest Way!

You will learn various ways to design software in an object-oriented manner through the 25 patterns of OODP.

This is the easiest JavaScript tutorial for those who are starting to code in JavaScript.

⚡ Short and sweet full 160-minute course! Copy and paste code from website to website and learn reactive programming with ReactiveX 😎

⚡ Short and sweet 90-minute course! Copy and paste the site's code to quickly learn GraphQL and how to use Apollo.

In this course, you will create your own React YouTube video site using the React framework and YouTube API. You will understand the basic concepts of React, learn how to structure components, and manage state. You will also learn how to use the YouTube Data API to retrieve external data, and understand how to process API responses to provide meaningful information to users. The goal is to create and utilize your own YouTube site.

This course is an introductory program designed for learners starting their React journey for the first time. It aims to help you systematically learn the basic syntax of JSX and develop practical skills through mini-projects where you can apply what you've learned. Beyond simple syntax learning, the curriculum is structured to help you understand the fundamental flow of React development and component-based development methods.

This is an intermediate learning course that goes beyond the introductory level of React to focus on the principles and practical applications of Hooks, which are most widely used in real-world development. Through Hooks—the core tools of functional components—you will learn step-by-step how to implement state management, lifecycle control, and performance optimization. In particular, the curriculum is systematically organized to cover everything from basic Hooks like useState and useEffect to the roles and usage patterns of advanced Hooks such as useRef, useMemo, and useCallback, helping you understand which Hook to choose for specific situations. Through hands-on examples, you will go beyond simple coding to gain experience in: - Optimizing state management between components - Preventing unnecessary re-renders - Managing dynamic data and controlling the DOM This will help you develop the intuition needed to solve problems frequently encountered in actual projects. By the end of this course, you will master the Hook-based development workflow—the core of React—and be able to confidently apply it to more complex application structures.

"A hands-on web development project course that covers everything from planning and design to implementation and deployment using Generative AI." We will complete the entire process together step-by-step—starting from idea conception, quickly creating designs with AI, implementing a functional website with React, and finally deploying it to the internet. Latest AI tools like Stitch and Figma Make will assist with your design work, and even complex coding will be taught in a way that is easy to follow step-by-step.

In this course, you will be able to create a Reddit website from scratch, step by step.

Practice REST API and GraphQL while creating a simple SNS service based on React. We introduce how to easily and simply create a backend environment for frontend development.

If you're a React developer, you've probably wrestled with useMemo and useCallback at least once, wondering "Do I really have to do this manually?" Finally, the React Compiler has arrived to solve that dilemma. However, whenever new technology emerges, reading through extensive official documentation from start to finish can be overwhelming. That's why I've carefully analyzed the React Compiler official documentation and prepared a course that extracts only the essentials for easy understanding. This course covers: - Why: Why the React Compiler was created and how it differs from existing approaches - How: Installation and configuration methods to apply directly to your projects - Troubleshooting: Key precautions emphasized in the official documentation and error resolution tips Now break free from the pain of manual memoization and focus solely on business logic. This course will upgrade your React development experience to the next level.

Let's build the skills to develop web applications using React and cultivate the capability to apply them in practice!

This course covers the core principles and practical techniques of Node.js that you must know before diving into professional frontend and backend development.

📌 This course is a curriculum that starts with a strategic AI tic-tac-toe project and completes core object-oriented programming concepts through practical examples. You'll train logic design and AI strategic thinking through game implementation, then directly experience OOP design techniques like inheritance, composition, delegation, and encapsulation through code. This is recommended for those who want to grow beyond syntax into a 'developer who designs' through real projects.

🚀 This is a mini-project practical lecture suitable for those who have just finished studying JavaScript grammar. It will help you break through the gap between basic JavaScript grammar and frameworks such as React or Vue. ✨

Building your own emotional diary service with Spring AI + React It's time for our 4th project with Neo + Essential!

This is a practical course where you will directly create a timer app using React, Electron, and Zustand, and even deploy it to cross-platforms (Windows, macOS, Linux). Starting with familiar React web development, you can learn the entire flow of desktop app development, including global state management via Zustand and final GUI deployment!

Create your own visual novel game using React, Javascript, SpringAI, and Springboot. Learn how to make a web-based visual novel game with SpringAI and React! Neo + Essential

A friendly course that even those who know nothing about coding can follow! The ultimate course that turns working developers into JavaScript experts!

This course teaches you how to build a web application using React and Firebase, implementing core features used in real-world services such as login, post management, file uploading, and profile management. You will build a complete web service step-by-step, implementing email and social login via Firebase Authentication, Firestore-based data storage and real-time data processing, file uploading using Firebase Storage, and profile management features. This course is designed for frontend developers to understand how to quickly implement web services using Firebase without the need for complex server construction.

Throw away those simple services you can make with vibe coding in just 10 minutes! You can learn 'real' practical vibe coding. Let's create advanced services at the level of actual services according to planning and design with Cursor AI NCOP. No Code, Only Prompt

mongoDB, NoSQL You hear a lot these days, but is it still an unfamiliar database? Aren't you using it like a relational database (RDS/SQL)? No matter how good the technology is, if it's not used correctly, it will have the opposite effect. That's why we often see cases of failure in using MongoDB. This lecture will teach you everything from basic concepts to practical know-how so that you can use MongoDB as MongoDB-like as possible.

This course goes beyond simply using Express.js. You will rebuild its internal engine from start to finish, gaining hands-on experience with the real principles of how a server works. By directly creating each component of Express—such as routing, middleware, request–response objects, static file handling, and template rendering—you will grow as a server developer and truly understand how a framework operates at its core.

A portfolio-focused course on deploying a React frontend and Spring Boot backend directly to the AWS cloud! This course is helpful for those who want to quickly deploy frontend and backend projects for their portfolio. You will gain the necessary knowledge for deployment through short-term, step-by-step practice, covering everything from server configuration to Docker, domain connection, Nginx, and HTTPS application!