Create Your Own Visual Novel Game in Just One Day

Claude + IntelliJ TodoList Development - Complete MCP Mastery Learn how MCP works perfectly by creating a TodoList with Claude and IntelliJ.

Teaches Springboot monitoring system construction (Prometheus + Grafana) from setup to utilization.

Building a 3D Globe Article Service with ThreeJS and SpringAI Create your own 3D globe article service using your personal chatbot and ThreeJS!

This course is designed to help you quickly learn server zero-downtime deployment methods using Nginx, Docker, and Spring Boot through hands-on practice. Learn Blue-Green deployment, which is frequently used in real-world scenarios, faster than anyone else!

This course is designed to provide hands-on experience with load testing using K6 on Spring Boot servers. You can experience the process of generating traffic with K6 on a simple CRUD-based server and visualizing the results with Grafana and InfluxDB.

The first publicly released ChatGPT open source GPT-OSS - getting a taste of it faster than anyone else. Find out what GPT-OSS is and run it locally to create an ultra-gap with GPT-OSS faster than anyone else.

Springboot + React RestAPI Bulletin Board Creation: Learn Faster Than Anyone Develop a CRUD server with Springboot and create your own board with React!

Mastering Python Algorithm Fundamentals Faster Than Anyone (Divide and Conquer, Binary Search) Learn Python fundamentals and dive into divide and conquer and binary search algorithms!

Learn Springboot + ReactNative RestAPI Board Creation Faster Than Anyone Develop a CRUD server with Springboot and create your own board with ReactNative!

Figma Beginner's Guide: From Basics to Website Design~ Learn Figma, the collaboration tool used by the most people worldwide!

Faster than anyone else, Electron Todo List With TypeScript Create a React-based desktop service using Electron developed with TypeScript!

Learn how to easily integrate ChatGPT API using SpringAI and develop AI servers through prompt engineering!

This course includes both server (Java+Springboot) and front-end (React, ReactNative, Flutter, Android, iOS) development. Experience building a full-stack bulletin board with this course.

Learn Springboot + Android(Compose) RestAPI Board Creation Faster Than Anyone Develop a CRUD server with Springboot and create your own board with Android!

Learning by Doing: 정보처리산업기사 I have prepared everything for passing the 정보처리산업기사 course-evaluation practical exam.

Learn Springboot + NextJS RestAPI Board Creation Faster Than Anyone Develop a CRUD server with Springboot and create your own board with NextJS!

Learn Springboot + Flutter RestAPI Board Creation Faster Than Anyone Develop a CRUD server with Springboot and create your own board with Flutter!

Learn the basics of Photoshop in just 1 hour

Learn the deployment process in the following order: Manually deploy Spring Boot with Chicken Combo value -> Deploy with Docker -> Github Action CI/CD.

Spring CRUD starting with the price of chicken Let's start server development with the price of chicken!!

In an era where AI writes code for you, will you remain a 'Coder' or leap forward to become an 'Architect'? This course is designed for junior developers who can handle basic implementation but feel stuck about the next steps or are anxious about falling into the trap of 'fake experience'. We aim to go beyond simply learning clean architecture theory and turn Robert C. Martin's (Uncle Bob) high-level design principles into weapons for the AI era.

A comprehensive React course learning the latest features of React 19 with TypeScript! From the basics to state management (Context, Redux Toolkit, Zustand), API communication (Fetch, Axios), the latest hooks (use, useActionState, useOptimistic, etc.), and practical projects, you will gradually learn to build React apps that can be immediately applied in real-world work.

Building a 3D Globe Article Service with ThreeJS and SpringAI Create your own 3D globe article service using your personal chatbot and ThreeJS!

Learn React the Easiest and Fastest Way!

Traditional React development methods and development using Next.js are completely different. This course penetrates the core of the latest Next.js 15 and teaches you the 'real' Next.js development approach. Experience how to achieve both performance and efficiency, from job portfolio projects to real-world projects. Let's develop the Next.js way! This course is structured so you can learn through hands-on experience by creating actual examples of how to apply Next.js features. You'll learn faster through actual code rather than theory, focusing on server components and covering server actions and caching strategies. Since the goal of the course is to catch up with the Next.js approach as quickly as possible, the lectures themselves are conducted using JavaScript. However, examples from each lecture created with TypeScript are additionally provided as course materials.

Understanding Spring Boot + React.js Login (+Social) Service is a course designed to help you deeply understand the authentication flow between frontend and backend, by directly implementing a practical login system that includes JWT-based authentication and social login (Kakao/Google). The frontend is built on React.js, and the backend on Spring Boot, enabling you to learn step by step the practices used in real service environments, such as the Access Token + Refresh Token approach, user state management using HttpOnly Cookie and Redux, Role-based authorization, and social login integration.

This course covers the Critical Rendering Path (CRP) process from start to finish, where the browser receives HTML to create the DOM, combines it with the CSSOM, and renders pixels on the screen. Beyond simple DOM manipulation, you'll learn how CSS and JS impact performance, image and font optimization, Lazy Loading, Intersection Observer, virtual lists, and DevTools practice, gaining practical strategies to noticeably improve real web performance.

We have completed a backend bootcamp course implemented by various institutions into a single curriculum. This lecture is a bootcamp pre-training (P) lecture. Anyone can take it, and those who want to take advanced learning should apply for the bootcamp (ZM) course.

Build a Springboot + iOS RestAPI Bulletin Board: Learn Faster than Anyone Develop a CRUD server with Springboot and create your own bulletin board with iOS!

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!

In the era of swift execution and validation, execute faster than anyone with VIBE Coding! Achieve complete monetization, from ads to payments, all by yourself.

I'll show you how Java backend developers using IntelliJ can maximize productivity with Claude Code. I'll especially help those using Windows environments completely solve vibe coding environment issues.

Let's create an AI chatbot service like chat gpt using Nextjs 14 version App router and vercel's ai/sdk.

Claude + IntelliJ TodoList Development - Complete MCP Mastery Learn how MCP works perfectly by creating a TodoList with Claude and IntelliJ.

A special Spring Boot meetup with Java Champion and Spring Developer Advocate Josh Long!

This is a recorded video of the TDD online live meetup held in July 2025.

The goal is to acquire basic knowledge of React Native for mobile app front-end development. This course is designed to enable non-experts to easily develop native mobile apps by utilizing languages/APIs with low entry barriers.

This course proceeds in stages, similar to the actual work, by learning and applying the necessary knowledge while configuring the infrastructure.

A Complete End-to-End Developer Journey — Build Lightning-Fast APIs, Modern Frontend Interfaces, Real Projects, Authentication Systems, Dashboards & Full Deployments Using FastAPI, React, and Vibe Coding Techniques.

Learn the deployment process in the following order: Manually deploy Spring Boot with Chicken Combo value -> Deploy with Docker -> Github Action CI/CD.