If you are planning or operating a WEB3 service but don't know "where accidents happen," you need this lecture. This course does not teach you about coins or development. Instead, it deconstructs the structure of recurring accidents in WEB3 and teaches you how to assess risks based on the boundaries of approval, signature, and authority. After taking this course, you will: ㆍBe able to read the structure of any DApp that comes your way ㆍBe able to assess risks using a checklist ㆍView WEB3 not just as a "technology," but as an "object of design."

“I have the data, but I don’t know how to look at it.” This is the most common concern for those starting on-chain analysis for the first time. In this course, a 10-year veteran data analyst and on-chain researcher fully reveals all the tools and interpretation techniques used in actual market analysis. ㆍWhich indicators react first before coin prices move ㆍWhether whales are accumulating or dumping ㆍHow to read market sentiment through bridge and stablecoin flows ㆍHow to extract data via Etherscan and Dune without programming ㆍAnd the interpretation patterns and strategies used by professional analysts This course is designed to help you go beyond "just looking" at on-chain data and build an analytical framework that leads to actual investment decisions.

For those who have only seen Ethereum's structure in fragments, I will organize everything from wallets and transactions to smart contracts and the EVM into a single, cohesive flow. You can follow along even without a technical background.

This course is a complete beginner's introduction prepared for those new to Web3. It explains in an easy and intuitive way why blockchain is important, how wallets, addresses, and transactions work, and the concepts we must know in the Web3 era. Through this course, students will: Understand the Web1 → Web2 → Web3 evolution Learn the core structure of blockchain (wallets, addresses, keys, transactions) Grasp the meaning of decentralization and the changes Web3 will bring Practice basics like creating and sending with actual wallets Naturally acquire these skills and establish a first foothold into the Web3 world. Designed to be accessible even without a technical background, this course is structured around easy and practical examples by an active on-chain analyst. If Web3 felt unfamiliar and difficult, experience the most friendly first step in this course.