Introduction to Networking — Truly Understanding Network Fundamentals, Beyond Just a Single Ping

Systematically master the basics of English speaking by following a 4-week curriculum with precise daily instructions. With 50 core expressions, verb usage, and practical scripts all included in the slides, you can master daily training methods and apply them immediately without the need for a separate textbook. Through a comprehensive learning design spanning from diagnosis to correction, even beginners can gain confidence in basic conversation within just 4 weeks.

Understand core AI concepts through visual materials—no formulas or code required—and practice prompt writing and task-specific application patterns. Covering everything from machine learning to generative AI, this practical introductory course empowers non-majors to apply AI directly to their work in just 90 minutes.

This is a 4-week program designed to build English speaking circuits through sentence output training rather than word memorization. Through 15 minutes of daily training involving whole-sentence memorization and a 5-step shadowing process, you will develop the ability to speak English with instant reactions without translating in your head. We focus on training mouth muscles and reaction speed rather than just injecting knowledge.

Have you ever skipped over the difference between m7i and m7g in the AWS console without knowing what it was? This lecture clearly explains the concept of AWS Graviton (ARM-based processors) in just 30 minutes. From instance type naming conventions to cost-saving principles and practical application criteria, we explain everything step-by-step at a beginner's level.

An introductory course that makes the terminal less intimidating even for Linux beginners, teaching you how to view server logs, find files, and develop practical skills using just cd / ls / grep

It is perfectly fine if you have no prior programming experience. We will learn step-by-step, from environment setup to error troubleshooting and basic syntax, while building a working program in every single lecture. After completing the 10-lecture course, you will be able to design and implement simple programs on your own.

Master all the wine-buying essentials in just 2 hours, covering everything from grape varieties, label reading, and tasting techniques to selecting wines for any occasion and food pairing. Through practical, jargon-free lessons, you will gain the confidence to pick out a bottle at the store.

For those aiming to pass the "Network Specialist Examination": This course is a learning program that condenses only the key points of the IPA Network Specialist Examination. It focuses on themes directly connected to passing the exam and is designed to help you acquire knowledge efficiently. Rather than emphasizing volume, we carefully select and explain "the essential parts you must master to pass"! Let's work hard together toward passing the Network Specialist exam!

Linux is an operating system widely used on various platforms worldwide, including servers, the cloud, and IoT devices. Through this course, you can enhance your competitiveness in the IT field based on a deep understanding of Linux. Furthermore, by acquiring expertise in open-source technology, you can prepare for the future technological landscape and stand out in a high-demand job market.

You can understand assembly code, backtrace functions, and understand the internal structure of gdb, which traces processes. You also cover the kernel's debugging tools.

The author of "Learning the Structure and Principles of the Linux Kernel Through Debugging" provides a thorough explanation of the most advanced kernel memory dump debugging skills used in system software, based on the latest Linux kernel (v6.1).

Understanding network configurations is extremely important when building applications on AWS. In this course, we will clearly explain the concepts and actual construction methods of basic network configurations in AWS.