Korean History Read in Context for Working Professionals

A reintroduction to high school mathematics that starts with nothing more than your memory of middle school math. The course is reorganized according to the causal relationships between concepts rather than the textbook order, so you first understand why each formula is needed. Designed to be completed in 24 weeks with 30 minutes a day, it helps working professionals and adult learners build a solid foundation in the mathematical concepts they encounter at work and in everyday life.

Diagnose cost leakage in a Kubernetes cluster and learn the decision criteria and validation methods needed before introducing automation tools. Validate key cost-saving techniques such as Karpenter, Spot Instances, and Workload Optimization in read-only mode, then practice the entire process of safely applying them to production and rolling them back.

Learn the core principles of writing prompts to get the desired results from AI. Increase the accuracy of your requests through template-based structuring, and master a repeatable prompt design process through step-by-step verification and Git storage. Compare good and bad examples directly to develop request-writing skills that can be applied immediately in real-world work.

Learn step-by-step English expressions actually used in IT practice, from reading official documentation and writing tickets or emails to sharing incident reports and conducting technical interviews. Master practical English that you can apply immediately today with templates and examples extracted from over 20 years of infrastructure operations experience. Learn real-world business English for global collaboration, not just English for exams.

Learn practical techniques to start studying through structure rather than willpower. Master twelve execution design methods along with worksheets to lower the barrier to starting, recover broken focus, and prevent a single day's failure from turning into giving up.

This is a hands-on course for systematically designing and building a multi-account environment based on AWS Organizations. It covers the entire landing zone implementation process, from designing the OU structure and Transit Gateway network architecture to the criteria for choosing between Control Tower and LZA, as well as strategies for incorporating existing accounts. Beyond simple console operations, you will develop the ability to make design decisions suited to your organization’s circumstances and establish an operational governance framework.

Identify the causes of weight-loss failure in environmental structures rather than willpower, and learn realistic weight-loss rates and goal-setting methods. Understand the mechanisms behind weight regain and learn a scientific approach to designing long-term success through sustainable environmental changes.

Learn stress management methodologies proven in 20 years of infrastructure operations. Instead of abstract advice, learn concrete procedures for recovering your mental resilience amid incident response, deadlines, and organizational change using actionable tools and worksheets. Learn how to set and maintain a minimum baseline you can keep, rather than a perfect routine.

This is a practical introductory course for new employees and juniors. You will systematically learn essential business fundamentals, from understanding instructions to reporting and task management. Through hands-on practice, you will master work processes that can be applied immediately.

This is an introductory networking course for non-majors that focuses on understanding the flow of communication through visuals rather than memorizing terminology. Using the layered model as a framework, we follow the entire process of what happens when you enter a URL into the address bar from start to finish, helping you build practical networking intuition that can be applied immediately in the real world.

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.

To ensure you are no longer afraid of the black screen, we will practice everything from server access to log checking and resource monitoring using only the 21 essential commands. You will start immediately in a web environment, learning everything from how to exit vi to hands-on practical inspection routines.

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

Understand the interpretation step that exists between events and emotions, and identify your own patterns of cognitive distortion. Through exercises in naming and rating the intensity of emotions, along with three-column recording, learn practical skills for handling emotions without being overwhelmed by them.

From installing the editor to initial Git configuration, you will personally build the entire development environment from start to finish. This is a practical, hands-on course where you will master terminal commands and folder structure principles, create your first project folder, and complete your first commit. In just one day, you will establish a stable development environment to be used throughout the entire 12-week program.

Analyze why your soccer skills have plateaued and learn how to overcome stagnation by understanding the principles of step-by-step growth. Through actionable routines—15-minute weekday training sessions, setting one goal per match, and writing a three-line post-match review—you can steadily improve your skills without additional time or expense.

This is a practical calculation process that establishes criteria based on the fundamental theorem of polynomials, reconstructs multiplication formulas using area diagrams, and streamlines division through synthetic division. The focus is on developing accurate organization habits and self-checking skills rather than calculation speed. It minimizes boredom and emphasizes connections to subsequent units to maintain learning motivation.

This course is about redesigning the way you work—not just the tools you use. You’ll diagnose three sources of wasted time: delayed starts, rework, and overwork, then build a repeatable work system using templates, standards, and checklists. Through a principles-based approach applicable across roles, you’ll learn how to improve both the speed and quality of your work.

From determining whether a medical consultation is necessary to measuring your resting heart rate and calculating your target heart rate zones, you will learn systematically. You will gain practical knowledge on how to recognize signs to stop training and identify indications of injury, enabling you to continue running safely.

Develop practical interpretation skills by accurately understanding the yin-yang concept underlying Four Pillars of Destiny from a relativistic perspective, from distinguishing the yin and yang attributes of the heavenly stems and earthly branches to assessing the yin-yang balance within a saju chart. This training corrects the common misconception that yang is good and yin is bad, and provides perspective-adjustment exercises for interpreting yin-yang imbalances as strengths and weaknesses.

We unearth exciting true stories from the Joseon Dynasty to modern history that were not covered in formal education. By illuminating history from a multi-dimensional perspective through diverse themes such as feng shui, forbidden books, the private lives of eunuchs, and the repatriation of cultural heritage, we provide humanistic insights that connect the past with the present.

Discover fascinating true stories from the Joseon Dynasty to modern history that were not covered in the regular curriculum through storytelling. Through various themes such as Feng Shui, forbidden books, the private lives of eunuchs, and the repatriation of cultural properties, you can understand history in three dimensions and gain humanistic insights that connect the past and the present.

A reading method that absorbs into your head with just one look? We will tell you a story that changes your life with just one book.

This course is a pilgrimage guide that provides a deep historical, theological, and archaeological exploration of the Seven Churches of Revelation located in western Türkiye (Roman Asia). It analyzes the political oppression of Rome and the temptations of pagan culture faced by each church, alongside the specific messages of Christ. Furthermore, it offers an integrated learning experience that facilitates both spiritual reflection and practical travel planning by providing a detailed 7-day recommended itinerary, tips for visiting historical sites, and information on transportation and accommodations for modern travelers.

A reintroduction to high school mathematics that starts with nothing more than your memory of middle school math. The course is reorganized according to the causal relationships between concepts rather than the textbook order, so you first understand why each formula is needed. Designed to be completed in 24 weeks with 30 minutes a day, it helps working professionals and adult learners build a solid foundation in the mathematical concepts they encounter at work and in everyday life.

Through this course, you can learn how to read books effectively. You'll be able to understand accurately and quickly through intensive reading and speed reading methods. I'll also teach you the criteria for organizing and categorizing books, and how to utilize them for your own content. Enhance the quality of your reading life with insider tips from knowledge creators.

A connection that starts with a single word opens the door to global communication. This course focuses on English vocabulary and expressions while covering cultural backgrounds, global phenomena, and business etiquette to enhance communication skills. It is suitable for business professionals who want to develop global awareness and cross-cultural adaptability.

This course explores the cultural and literary significance of wine as depicted in Chinese poetry across different eras. From the Han Dynasty to the Ming and Qing Dynasties, we will appreciate the emotions, thoughts, and social conditions expressed by poets through wine, using original texts and translations of representative poems. Participants will experience a humanities journey to understand the evolving imagery and deep symbolism of wine within the historical context of each period.

An easy-to-understand lecture by the author of [AI Leadership], a management scholar with a background in program development and a creative organization HR expert

Data Analysis that Determines Online MD Performance! Learn essential data analysis and strategy formulation techniques necessary for MDs to maximize sales and profit in the e-commerce market.

Do you want to get a job as a data analyst? Based on my experience, let's take a look at the tasks for each data role in real companies.

We understand the essence of the job market through concepts from economics and statistics, and use this foundation to redesign job-search and career-change strategies as a data-driven probability problem rather than relying on intuition or competing over credentials. Instead of accumulating more qualifications, we shift the game to a rational “market” by directly collecting and analyzing job-posting and company data with AI to identify markets and openings where the likelihood of success is high. By using AI as a tool built on core concepts from economics and statistics, we systematize application, interview, and job-search strategies, presenting a way to develop a data-driven approach to employment that even non-majors can understand. We also directly build a recruitment AI assistant that works 24 hours a day exclusively for me—using AI-based vibe coding accessible even to non-majors—which can be used immediately as a portfolio project in actual job preparation.