Diving into Next.js: From a "Developer Who Can Use It" to a "Developer Who Understands It"

This is a practical Vibe Coding course where you will create a Travel MBTI diagnosis web app using only AI prompts and complete it to a production-ready level by actually integrating the Korea Tourism Organization's public Open API. You will learn how to transform crude results into a high-quality web app using prompt-splitting techniques, and cover the entire process from API key security to deployment.

You can learn React, an essential course for aspiring frontend developers, and even build a portfolio project.

Learn how to measure the performance of your React-built web services and optimize them for speed and efficiency.

Have you ever had these concerns? I’ve learned React, but I don’t know what to actually build. I want to create a portfolio, but I can’t think of anything besides a Todo app. Map APIs or Public APIs seem difficult, so I haven’t even tried them. I’ve never deployed anything, so it always ends as a “local project.” The code is getting more complex, and I don’t know how to design the architecture. 🎯 Problems this course solves This course isn’t just about showing you how to display a map. ✔ How to connect Public APIs to a real service ✔ How to stably design Map SDKs within a React structure ✔ Marker optimization and reusable InfoWindow structures ✔ State management design using Context ✔ Practical application of Tailwind + SCSS ✔ GitHub organization and Vercel deployment I will teach you how to design with a real service structure, not just "implementing features." 💡 This is not a "just follow along" course Why we use useRef Why you shouldn't create new markers every time Why you need to separate state Why environment variables must be managed separately in production There is a reason for every choice. This course explains those "reasons." 🚀 After taking this course, you will: Complete one map-based portfolio project Gain experience integrating Public APIs Understand the structure of attaching external SDKs to React Gain experience in designing professional-grade project structures Have deployment experience And you’ll be able to say this in an interview: “I personally designed and deployed a map service based on Public APIs.” This one sentence makes a huge difference. 👩‍💻 Recommended for: Those who know basic React syntax but lack project experience Those who want to build a portfolio for employment Those who wanted to try a Map/Public API project Those who want to learn design patterns close to real-world practice 🔥 The Goal of this Course This course is not about “how to make a map,” but about learning the “mindset of designing a service.”

Master React rendering principles and optimization to apply them in real-world situations and prepare for interviews!

This is a course where you will build a map service from scratch using the MERN stack (feat. TypeScript). Let's build it step-by-step while following the official API documentation.

A full course of hands-on Next.js! Complete a real-world project with the latest technologies such as GraphQL, Redis, RabbitMQ, Prisma, TailwindCSS, Docker Compose, Cypress, Prometheus, and Grafana, and experience both the App Router and Page Router.

This course will teach you how to develop web games.

This course will help you develop mobile apps that can be serviced on Android and iOS using web development.

Solidify your foundation in Python/Django web service development. Learning Django takes time, but you can maximize your productivity through iterative development. Turn your imagination into reality.

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.

A course to learn the latest Node.js backend REST API using fastify, a Node.js framework boasting high speed, ORM Prisma, and Typescript.

This is a practical project course on running Whisper locally and quickly developing an AI speech recognition app using FastAPI and Next.js. You'll implement real-time speech recognition and complete a project that can be used as a simple portfolio piece in a short amount of time.

If you want to understand TypeScript properly, you should read the official documentation at least once, right? This lecture will convey only the important parts of the documentation in an easy-to-understand manner, and also teach you the content you need in practice!

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

Cultivate advanced programming language utilization skills and software design and implementation skills combining functional, object-oriented, and LISP paradigms, necessary for growing into a mid-to-senior level developer.

No coding skills? No problem! Turn your ideas into real profit in just 4 weeks. Use AI and the latest tools to build a website and an app simultaneously and launch your service right away.

While LLMs are currently transforming the development environment, what truly matters is not just "writing code on your behalf" but integrating them as features into a service. This course provides a step-by-step guide to implementing a lightweight yet polished Tarot reading service using Next.js and the OpenAI API. In the first stage, we will build an MVP that works without a backend, connecting the user input flow (questions/threads/card selection) to result generation. In subsequent stages, we will expand the functionality by building a backend, implementing general login and OAuth, adding community features, and creating a reading dashboard. Finally, we will conclude by deploying to AWS and integrating Google AdSense to complete a service ready for actual operation. Additionally, we will cover understanding pricing structures and cost optimization strategies to ensure that LLM API usage costs do not become a burden.

This course is about TypeScript and React.

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!

"Why did the AI write this code?" or "Why can't it remember what I just said?" The frustration you encounter when using AI tools like Claude Code stems from not knowing how the tool actually works. This course flings open that black box. Over 25 lessons, we will build our own Coding Agent from scratch that functions exactly like real-world professional tools—giving the LLM 'eyes' to see files (Read), 'hands' to fix code (Edit), and 'feet' to execute commands (Bash). This isn't just about learning how to use a library. You will gain hands-on experience by implementing code to understand how AI perceives project structures, why it loses its memory during long conversations, and how to solve those issues technically (Sliding Window, Summary). Through this process, you will evolve from being a mere 'user' of AI tools to an 'AI provider' who understands the underlying principles and can customize and evaluate tools to fit your specific needs.