TypeScript in Bite-Sized Pieces

AI is only as good as you are. Learn vibe coding properly in three steps: how to use AI → essential foundational knowledge → project development. For those who want to learn vibe coding the right way, we deliver the core concepts that remain unchanged regardless of which AI you use, broken down into bite-sized pieces.

Master JavaScript and React all at once with this course, covering everything from the fundamentals to unique projects. Learn briefly, apply extensively—an 18-hour All-in-one course!

The third installment in the One Bite series! This is the kindest and most detailed Next.js course in the world. We’ll explore not only the App Router but also the Pages Router through hands-on projects.

Now it’s time to take on a real-world project 🔥 Together, we’ll build a production-grade social networking service with React.js + TypeScript + Supabase, implementing features such as authentication & authorization, infinite scrolling, image uploads, likes, infinitely nested comments, and dark mode. Along the way, we’ll also explore server and global state management techniques using Zustand and Tanstack Query.

Upgrade your React app with Zustand, TanStack Query, and Tailwind CSS! We’ll guide you through the core concepts and usage of various tools so you can take on even complex projects.

If you keep getting errors after asking AI to do it, the problem isn’t the AI—it’s that you lack the foundational knowledge to guide it. In this video, we’ll cover the seven foundational concepts that people who get stuck while vibe coding were missing, and explain what each one is and why it’s necessary. 👾 This is explained for people on day zero of coding who have never opened a terminal before.

The third installment in the One Bite series! This is the kindest and most detailed Next.js course in the world. We’ll explore not only the App Router but also the Pages Router through hands-on projects.

This is a TypeScript course designed to help you become a top-tier web developer through in-depth lessons. By completing this course, you will gain a profound understanding of the essence of TypeScript, enabling you to master React, Next.js, NestJS, and more.

Now it’s time to take on a real-world project 🔥 Together, we’ll build a production-grade social networking service with React.js + TypeScript + Supabase, implementing features such as authentication & authorization, infinite scrolling, image uploads, likes, infinitely nested comments, and dark mode. Along the way, we’ll also explore server and global state management techniques using Zustand and Tanstack Query.

In this course, you will learn about TypeScript.

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

"Next.js Master Class: Part 3 - Completing Real-World Architecture" goes beyond tutorial-level projects that only run locally; it is a guide to designing "real production" architectures capable of handling massive traffic. It covers all the core technologies used in the industry, from flawless state synchronization combining TanStack Query and Zustand, to Turbopack-based bundle optimization under 100KB, advanced SEO injection, and building ironclad full-stack security networks using proxies and JWT sessions. I strongly recommend this course to those who want to overcome tedious hydration errors and CORS barriers on their own, moving beyond being a simple coder to becoming a "Senior Architect" who commands the entire frontend system.

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

This is an introductory course to the front end using Next.js and Tailwind CSS. It is designed to complete static deployment without a backend, so even beginners can experience the satisfaction of completion.

We will develop an avatar-based community app using React Native. You will learn the process of creating a high-quality community app that includes not only post creation but also comments/replies, likes, polls, and avatar generation.

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.

"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.

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

Let's apply TypeScript to Node.js, add typings to existing npm packages, or create your own TypeScript library.

After studying JavaScript, starting TypeScript often leads to getting stuck on the question, "Why should I use these types?" rather than the new syntax itself. This course covers everything from basic types to unions, type narrowing, generics, keyof, Pick, and Omit in a connected learning path. Additionally, practice problems are provided as separate missions so you can directly apply what you've learned. After completing the course, you will be able to understand the causes of type errors instead of blindly hiding them, safely reduce repetitive types, and express the intent of your code through types.

This course is a practical, hands-on guide for those who want to learn how to maximize development productivity in the AI era. Beyond simply learning how to use AI, we focus on how to utilize Claude Code in a real-world development environment and how to produce "proper results." Many developers use AI but still face issues such as: ❌ Inconsistent results ❌ Poor code quality ❌ Increasing project complexity To solve these problems, this course teaches you how to utilize AI as a "development partner" rather than just a tool through: ✔ Spec-based workflows ✔ Structured command systems ✔ Sub-agent and automation strategies Furthermore, you will gain the experience of completing and deploying a full application from start to finish by integrating with real-world services such as Firebase, Figma, GitHub, and Vercel.

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 course helps you understand the entire backend development process by building everything step by step, from an HTTP server to AI services. You will develop the ability to read and understand AI-generated code while learning core concepts such as servers, databases, HTTP, login, and deployment, along with practical applications of Node.js, Express, and NestJS through hands-on exercises.

I recommend this to those who want to learn how to easily create and distribute Android apps, Windows apps, and iOS apps. We will teach you the basics of TypeScript rather than JavaScript and Angular!

We have entered an era where it has become incredibly easy for web developers (especially React developers) to launch apps. With Expo, you can release both Android and iOS apps even faster. Let's become developers who can quickly launch apps through Expo.

If you don’t know why things keep breaking when you have AI do it, the problem isn’t coding—it’s telling it what to do without understanding “what’s happening.” I’ll teach you vibe coding by taking a web service with login and payments from scratch all the way to launching it on your own domain and getting it indexed by search engines, while understanding the context behind “What just happened?” at every step.