The One Map Every Web Developer Should See

This course summarizes the essential concepts you must know before learning any programming language. Furthermore, by practicing with a dedicated training system, anyone can easily acquire the critical thinking skills necessary for programming.

From AWS EC2 backend operations to automatic error fixing, we are revealing the entire development process of Sidabari (https://github.com/cx8537/sidabari), a Claude Code-based automation tool. In this course, we provide all the actual prompts and conversation history used as learning materials, allowing you to experience the entire prompt input process involved in its creation.

We have gathered all the essential network theories that those planning to operate services in an AWS environment must know. Through this course, you can understand the principles of how AWS VPC (Virtual Private Cloud), composed of private networks using Private IPs, works and gain a detailed understanding of the roles of services such as ALB and NLB.

This is a C programming course for those who wish to pursue a path as a professional developer rather than just a hobbyist. I recommend this to those who are willing to learn through bitter and rigorous study to reach a sweet destination!

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!

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

Design a modern 3-tier web service with AI and develop it using only "Vibe Coding," then deploy it to an AWS environment to complete a fully functional production service! We have included the entire sequence of configuration processes so you can experience core AWS services used in the industry—such as Amplify, CloudFront, ALB, EC2, S3, and RDS—in a single workflow.

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

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!

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

From TCP/IP to HTTP! This course is prepared for those who lack basic network theory but hope to understand major-level concepts, even if it means "memorizing" them. You can do it!

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

Anyone who is a C/C++ developer can get started. You can quickly learn MFC Windows programming by selecting only the core. We also provide a 1200-page textbook.

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.

We will show you how Java backend developers using IntelliJ can maximize their productivity with Claude Code. In particular, we help you perfectly resolve the vibe coding environment issues faced by those using Windows environments.

This course is designed to guide those who have completed the "Mastering Core Network Theory through Memorization: Basic Course" to understand more advanced theories. It covers deeper concepts such as NAT technology, which is the operating principle of internet routers, as well as load balancing system principles and VPN technology principles. The goal of this lecture is also to finish by "memorizing" it all! You can do it!

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.

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

You will acquire the skills to develop a security system by learning how to intercept the process in which a specific application calls various API functions. ※Absolutely no abuse!!!

This book contains only the essential techniques for those developing Windows OS-only applications using MFC.

You may have felt frustrated using Redis without being able to explain why it should be designed that way or why certain patterns emerged. Through my experience in both practical development and as an interviewer, I have treated Redis not just as a simple cache, but as a core component that determines service stability and scalability. This course is not about memorizing commands; instead, I will share my experiences on which structures to choose in real traffic environments and their trade-offs, helping you establish the criteria to explain these concepts confidently in both interviews and practical work.

By creating 22 different mobile layouts across 19 pages, you can enhance your mobile web development skills, which is the most competitive asset for getting hired and working as a professional publisher. You will be able to solidify almost all production methods and know-how required for mobile web publishing. A key strength of this mobile web publishing course is the detailed instruction on how to create HTML wireframes for every single page. Through these lectures, your ability to build HTML wireframes will improve significantly. In particular, you will thoroughly learn CSS Nesting techniques. Centered around Flex layouts, you will gain sufficient intermediate-to-advanced practical CSS skills.

A current startup CTO will share vibe coding knowledge gained through actual services and various outsourcing projects.

Create and distribute your own portfolio website with Bootstrap 5! The world's most used web design toolkit! Bootstrap 5

We believe that you need to know HTML and CSS well to become a solid front-end developer.✍ From the types of HTML and CSS to practical applications, this course will teach you how to use the language correctly. We prepared it with great care, so please enjoy it :)

It covers the essential core of computer science that remains unchanged in the AI era. You can prepare for system design interviews for employment or career transitions.

Learn how to develop advanced interaction effects frequently featured on Apple's website from scratch.

This course is a course where you can learn the Spring Framework. Most courses only introduce the Spring MVC Project, so you will not be able to properly understand the terms, concepts, and operating principles, and you will learn without knowing how it works.

What if you need to study Spring Legacy projects? What if you want to create XML configurations one by one?

Grab your keyboard and practice, and you'll master the three major web development skills!

Are we truly utilizing HTML and CSS to their full potential? Before getting trapped in complex frameworks and JavaScript logic, we will directly implement everything from Whac-A-Mole to escape room games using only markup and styling—the essence of the web. Experience the power of 'fundamentals that aren't swayed by tools,' taught by an active developer with 4 years of experience.

Even people who are studying Java for the first time can easily understand it. You'll learn Java through theory with rich explanations and hands-on practice.

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

For over 15 years, Young Codi Kim, a star coding instructor, has been dedicated to coding education for elementary school students, high school students in IT software departments, university students in computer science, and job seekers without a major in the field. Now, you can experience Kim's easy and fun coding lectures not only offline but also online. With Young Codi Kim, who has trained over 500 front-end, back-end, full-stack, and web developers, your dream of becoming a developer will soon become a reality!

This lecture covers how to easily implement game backend systems using UGS (Unity Gaming Service). You will practice essential features such as Guest and Username/Password authentication, game data storage, leaderboards, and Remote Config. UGS has built a perfect ecosystem with Unity, preparing a practical course for easy learning without entry barriers, allowing immediate application to your projects.

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!

You can enhance your mobile web production skills, which are the most competitive assets for publisher employment and practical publishing work. You will be able to solidify almost all production methods and know-how required to create mobile webs as a publisher. In particular, to cover much of the design ability required of publishers and developers these days, we have provided detailed explanations of the process of working on mobile web UI design using Figma. A key strength of this mobile web publishing course is the detailed instruction on how to create HTML wireframes for every single page. Through this lecture, your ability to create HTML wireframes will improve significantly. In mobile web publishing, you will acquire practical skills comparable to real-world work by learning how to perfectly adjust layouts for mobile and tablet devices using CSS variables (Var). You will fully develop intermediate-to-advanced practical CSS skills, centered around Flex layouts.

This course provides a step-by-step learning path, ranging from the fundamental usage of MySQL to advanced techniques required in real-world production environments. It covers a wide range of topics, including data modeling techniques based on various case studies and practical data, evaluating the effectiveness of Foreign Key designs, analyzing Google Calendar schema DDL, and modern DDL design principles. Through this course, you will gain an in-depth understanding of how to utilize MySQL as a core system component rather than just a simple database.

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 course is a practical program where you will master Kotlin-based AI agent development by building your own coding agents. Using Koog, an AI framework built with Kotlin, you will learn step-by-step how to implement coding agents similar to Claude Code, Cursor, and Junie. Koog is more than just a simple server-side framework; it integrates seamlessly with Spring and offers the scalability to connect with various environments—including Android, iOS, Desktop, and Web—through Kotlin Multiplatform (KMP). By building intelligent agents that can read, analyze, modify, and generate code, you will gain hands-on experience in AI agent architecture, strategy, context handling, and tool integration.