The One Map Every Web Developer Should See

From TCP/IP to HTTP! This lecture is for those who lack basic network theory and want to understand major theories by memorizing them. You can do it!

This lecture guides those who have learned the basic course of network core theory by memorizing it to understand theories in more depth. It covers more in-depth theories such as NAT technology, the operating principle of Internet routers, load distribution system principles, and VPN technology principles. The goal of this lecture is also to finish it by memorizing it! You can do it!

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.

We will help you memorize and finish the encryption technology responsible for the security of the Internet very easily. You can understand the structure and principles of various technologies such as SSL certificates, PKI technology, digital signatures, and public authentication systems.

This is a lecture for all non-major beginners who want to become computer science majors by memorizing broadly and shallowly. You can quickly learn what you can learn in essential computer science major subjects such as computer architecture and operating systems. Above all, you can finish it by memorizing it!

This is a C language programming course for those who want to become professional developers rather than hobbyists. I recommend it to those who want to learn by writing and reading and go down a sweet path!

Secrets to Escaping Beginner Status Revealed! We'll properly teach you about Java multithreaded programming and synchronization techniques!

This course is for those who want to develop packet analysis programs like Wireshark and various network solutions using the Npcap library.

This lecture comprehensively organizes the content that would be good for those who want to get a job as a new Spring Java backend developer, especially those who are about to have an interview.

A must-take course for anyone thinking of becoming a Windows programmer! Have you studied C/C+, data structures, and operating system theory? If so, studying system programming is the answer now. Now it's time for practice!

We enable you to fundamentally understand and resolve issues where Hangeul appears broken on web pages or in databases, or files contain unknown characters.

Starting with java.io, you can learn how to develop high-performance input/output systems based on NIO and NIO.2. Most importantly, the moment you master file I/O, we'll enable you to master high-performance server development as a bonus!

If you have studied the C language thoroughly and studied linear data structures, it is now time to experience the world of object-oriented programming with C++!

Based on an understanding of Reflection and Annotations, it helps you clearly understand how the Spring framework operates!

This is a course provided to those who have completed the course 'Learn broadly and superficially to become a computer science major' so that they can study the operating system in more depth.

In this lecture, you will learn application-level protocol design techniques and how to develop a high-performance server based on IOCP!

This course covers topics for those who have completed basic studies of the C language, such as compiler theory, stack frame structure, multi-threading, virtual memory structure, security vulnerabilities, and secure coding. It is highly recommended for those who wish to become experts in the C/C++ field, or those who majored in CS or have similar skills!

It covers just two things properly: object-oriented programming and the JVM! Plus, it throws in linked-list-based linear data structures.

This lecture covers how to properly implement a linked list-based linear data structure using C language. You can understand the structure of the DB as well as the linked list at once.

For those aspiring to be Java-based Spring backend developers, to easily secure a job, we learn Java properly! Rigorously!

Just listen. The lecturing skill, captivating power, and lecture quality are different.

Learn what concurrency issues are and how to deal with them.

How to Handle Explosive Traffic Growth? Learn to build resilient and flexibly scalable architectures through practical design patterns based on EDA (Event-Driven Architecture) using Kafka, Spring, CDC, and Temporal. Explained clearly and simply with real-world experience from Kakao developers, making it understandable even for non-majors. A hands-on focused course covering real-time data flow, event processing, and microservice integration all at once!

To become a developer who creates websites, there are many skills to learn. Among those many skills, I will explain HTML and CSS, which are the basics of website creation and the first things you should learn. You will learn how to write HTML and CSS, and at the end, you will do a project to create a website similar to the actual Amazon website. And you can create a URL of the project you made and distribute it.

Libraries are optional, but web standard technologies are essential. Adapt to the new standard for web animation, Web Animation API, faster than others and apply it to your work right away!

This course will help you understand the operating principles of Spring Boot by creating the core functions of Spring Boot yourself, and learn how to learn and use Spring Boot well through this. You can learn various ways to utilize the Spring Framework used by Spring Boot.

Using JavaScript, you can select HTML elements and change their styles or implement animation effects based on various events. This covers fundamental JavaScript syntax for style modification, event handling, and commonly used effects when implementing web pages.

This is a full-stack restaurant map tutorial that allows you to learn everything from front-end, back-end, Kakao Map API usage, and deployment all at once while creating a restaurant map of your favorite YouTuber.

This is a revised version of a lecture on how to use Bootstrap to create responsive web pages that change layout depending on the device.

CSS Grid is a powerful tool that allows you to implement complex layouts simply and intuitively. This lecture is designed to help you easily learn the core concepts of CSS Grid to practical applications step by step. Stop being tied to complicated floats and flexboxes and learn the standard of efficient layout design! Start now!

You can improve your mobile web production skills, which are the most competitive in publisher employment and publisher practice. As a publisher, you can hone almost all production methods and know-how for producing mobile web. In particular, we have explained in detail the process of working on mobile web UI design with Figma, so that you can cover a large part of the design skills required of publishers and developers these days by learning Figma. In the mobile web publishing class, we explain in detail the detailed method of writing HTML wireframes, which is the strongest part of the class. Through the lecture, your HTML wireframe production skills will be greatly improved. Mobile web publishing is a learning process that perfectly matches the layout for mobile and tablet using CSS variables (Var), so that you will have the ability to work on practical tasks that are similar to real work. You will gain sufficient intermediate to advanced CSS practical skills, focusing on Flex layout.

[TPC DB!] A course that allows you to learn database modeling while thinking, learn database modeling step by step, and master everything from database modeling to web programming implementation all at once.

Based on an understanding of Reflection and Annotations, it helps you clearly understand how the Spring framework operates!

Data can be processed and presented in tabular form, but the most important thing is to present the data in a way that humans can understand at a glance.

Jeju Coding Base Camp's free lecture is back!! Let's create a 10,000-hour rule service together and distribute it to Github!! :) You don't know anything? That's okay. Everything is prepared in this lecture!

Kotlin Programming Language, which you can learn by practicing with 76 examples. You have to develop in Kotlin starting tomorrow, but you don't have time to study the grammar? Let's quickly learn all the grammar of Kotlin with the examples provided in this lecture.

Beyond basics like API design, CRUD implementation, and JWT authentication, all the way to backend architecture design! This is an introductory system design course to help you build 'your own backend architecture' that you can confidently discuss in interviews.

A three-in-one class where you can create web games and learn front-end web development skills! This class has been created to teach you how to create games using JavaScript, CSS, and HTML with your own ideas!

This is a practical exam specialist lecture that is optimized for the practical exam content that exactly matches the exam criteria implemented until the Web Designer Qualification Exam Criteria (2025.1.1~2025.12.31), and the HTML+CSS+JQUERY Publishing, Coding Works Web Designer Qualification Exam Practical Exam Lecture is different. It includes both the perfectly produced D-type and E-type classes added in 2023 and the perfectly produced F-type classes added in 2024.

📌 This course starts with a strategic AI Tic-Tac-Toe project and is a curriculum that completes the core concepts of object-oriented programming through practical examples. Through game implementation, you will train logic design and AI strategic thinking, and then directly experience OOP design techniques such as inheritance, composition, delegation, and encapsulation through code. This is recommended for those who want to go beyond syntax and grow into a 'designing developer' through a real project.