On-chain Data Analyst Basic Course

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.

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.

This course is a complete beginner's introductory program prepared for those who are new to Web3. It explains why blockchain is important, how wallets, addresses, and transactions work, and the concepts we must know in the Web3 era in an easy and intuitive way. Through this course, students will naturally learn: Understanding the flow of Web1 → Web2 → Web3 Core structures of blockchain (wallets, addresses, keys, transactions) The meaning of decentralization and the changes Web3 will create Basic hands-on practice such as creating and sending from an actual wallet By doing so, you will establish the first stepping stone to enter the world of Web3. Designed so that even those without a technical background can follow along, an active on-chain analyst has structured the course around simple and realistic examples. If Web3 felt difficult because it was unfamiliar, experience the most friendly first step in this course.

This course is designed for those who wish to obtain the nationally certified Advanced Data Analytics Semi-Professional (ADSP) certification. As the need for practical data analysis experts in both public and private sectors grows, this course is structured to help participants objectively verify their data analysis skills—essential for data utilization across society—and successfully apply for and obtain the certification.

There are frequently appearing question patterns in the Big Data Analysis Certification practical exam. There are also a few lines of code that you must memorize before going to the testing center. If your goal is to pass the exam, be sure to take this course.

A course that allows non-majors, newbies, and planners to create blockchain dApps even if they have never coded before.

You can understand metaverse technology in a short period of time, and we will teach you practical skills for creating metaverse worlds and issuing and selling NFTs without coding.

You will gain experience deploying to the Ropsten testnet and learn how to write more mature smart contracts in Solidity using the Truffle framework.

How to view safe indicators and objective data that should not be missed when investing in Bitcoin and altcoins, and share real airdrop know-how and practical methods that made it from 0 won to 100 million won

This is a practice exam and latest past exam restoration problem-solving course for those who wish to obtain the Advanced Data Analytics Semi-Professional (ADsP) national certification.

This online course covers everything from the basic concepts of information security to the latest security issues, focusing on core content for obtaining certification. It enables efficient exam preparation through theory and practical mock exams that reflect the latest trends, and is structured so that even beginners can easily follow along.

The Big Data Analysis Certification is a national certification exam held twice a year. For those preparing for the exam, I have provided detailed lectures covering everything from the basics to core concepts. The difficulty of the exam increases with each session. To address this, I have provided various essential contents starting from the fundamentals to help improve the passing rate.

“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.

This is a must-see lecture for blockchain planners, developers, and company representatives. If you didn't have time to study separately, you can understand the core of the Bitcoin and Ethereum white papers through this summary lecture.

This is a Python basics course for starters who want to grow as data analysts. - Those who want to do data analysis but don't know Python - Those who want to learn machine learning with Python - Those preparing for the Big Data Analytics Engineer practical exam - Those who want to develop machine learning-based applications with Python

Sui is a layer 1 network that is friendly to both users and developers. It aims for wide usability through fast speed and low transaction costs. As an official education partner of Sui, Weldon Studio will guide you through the specific process of development and use through the network.

SQLD, where should I start? For those of you feeling completely overwhelmed, this is the lecture for you. You will meet a transformed version of yourself after completing the course. SQLD All-in-One Pass!

Virtual assets and cryptocurrencies have driven financial innovation, but they are also being used as tools for crime, money laundering, and data breaches. This course starts with the basic concepts of virtual assets and blockchain, tracks actual cryptocurrency transaction flows, and analyzes suspicious fund movement structures.

This lecture covers the basics of crypto investment, including the value and risks of Bitcoin, Ethereum, and other Layer 1s (Cosmos).

This course is a hands-on practical session where you will build your own NFT marketplace using Solidity smart contracts, frontend technologies, and web3.js. Students will implement all marketplace features—from NFT minting to selling, buying, and deleting—and deploy them directly to the latest testnets: Ethereum Sepolia, Polygon Amoy, and Kaia Kairos. Additionally, you will learn how to use IPFS for the decentralized storage of NFT images and metadata, allowing you to experience a production-ready DApp architecture that goes beyond a simple demo. ✨ Key Features of This Course Full-Stack Learning: Covers React UI, smart contract writing, and multi-chain deployment all at once. Up-to-Date Environment: Supports Sepolia, Amoy, and Kairos testnets with MetaMask integration. Master the Core NFT Process: Image upload (IPFS) → Metadata creation → Minting → Marketplace trading. Practical & Hands-on: Gain real-world service development experience, including transaction handling, UX design, and multi-chain support.