Prompt Engineering - Theory & Practice of Techniques for Using AI Like a Professional

Apply the latest trends in generative AI directly to your work! The bible of prompt engineering lectures, containing only the essentials.

No development knowledge needed! Create your own automation system in just a few clicks.

This is a practical course on building a RAG-based document search system using the OpenAI API and Spring AI in a Spring Boot environment. You will learn the entire process of developing an AI assistant step by step, from the concepts of Prompt Engineering, Vector Stores, and Embeddings to rapid prototyping with Dify, MCP tool integration, multimodality, and guardrails. You can learn practical application strategies by comparing direct implementation with the use of no-code tools. 🆕 [Update] Section 4 now includes a supplementary lecture (1 hour) on TypeSafe’s Jev decision-making model, covering how to design an agent’s decision-making logic in greater depth.

In the era of AI, the final touch of work is done by humans. Learn persuasion and negotiation strategies to bridge differences and achieve results that satisfy everyone, through vivid real-world cases from a business negotiation expert.

The AI that finds everything for you! A practical solution for AI research that connects planning, investigation, analysis, and delivery into one.

Strategic Resume Writing for Experienced Developers: Insights from an Interviewer Who Has Reviewed Thousands of Resumes ✅ Real insights from actual hiring decision-makers ✅ Strategies based on experience at both large corporations and startups ✅ Content specialized for server developers with 3+ years of experience ✅ "Interviewers are busy too" - How to win within 30 seconds ✅ AI is a tool, storytelling is the core

"Are you still working overtime every day glued to Excel? Now, get it done with just 1 click." With a background spanning overseas sales, sales management, and SCM, I am now a finance and accounting professional. I have developed automation routines using AI and VBA that cut 40 hours of weekly repetitive tasks down to just 8 hours, and reduce an 8-hour workday to a mere 1 hour. I will share the proven practical know-how I've honed through 9 training sessions (4 in-house and 5 external) to date. This is not a course about memorizing coding syntax. Instead, you will work with AI to create macros tailored to your exact needs, register them in your 'custom ribbon menu', and build a practical workflow that gets the job done with a single click. Even if you have no prior knowledge of VBA, you can start applying these techniques to your actual work the very next day after the training.

The topic is no-code data analysis utilizing generative AI tools. We perform all stages of data analysis, including data collection, analysis, visualization, and report writing, using AI tools such as ChatGPT, Gemini, Claude, Perplexity, and Julius.

Create ads all by yourself in a snap! Visual creative practice: Complete everything from images to videos and music with AI

While your colleagues are already working with Claude Code, are you still doing all of this manually? Don’t worry! Take this course, and you too will become a vibe-coding master.

# AI Side Hustle King: Aiming for 1 Million Won per Month with 2 Hours a Day I'll reveal every detail of my know-how—raising two kids while generating 15 million won in pure profit / 60 million won in sales per month, working just 2 hours a day. I'm confident I'm the best at utilizing AI in online sales. Smart Store / Coupang / Branding - An all-in-one package covering sourcing / marketing / detail pages / sales This isn't about randomly churning out products based on luck. It's designed to read the market → create a structure that sells → systematically drive exposure and conversion. I've included only what's essential, in the right order, to minimize wasted effort while using minimal time. ## What This Course Does for You - Helps you select "products that sell" when you're unsure what to sell - Teaches you how to read keywords and intent to reach profitable customers first - Shows you strategies to avoid competition by changing "category names" for the same products - Sets up a roadmap for the structure and timing that generates exposure on Coupang and Naver - Boosts conversion rates with detail pages and connects reviews/blogs/ads - Reduces image/content creation time with AI, making 2-hour daily operations possible ## Core Flow Included in the Curriculum **1) Planning Products That Sell** - Selling customer "problems," not products - Extracting ideas from customers' inconvenient habits - Reading market depth through search patterns - Practice: Identify 3 problems your product solves **2) Practical Keyword Research** - Reading "intent" is more important than search volume - Capturing key points in the search → comparison → purchase flow - Differences between Coupang vs Naver keyword research - Practice: Finding keywords for your product **3) Categorization to Avoid Competition** - The principle that the same product enters a different market with a different name - Creating a competition-free position by inventing new category names - Success case analysis + niche exposure structure - Practice: Planning a new category name for your product **4) Platform Strategy (Coupang·Naver)** - Making top exposure through "structure," not "effort" - Understanding Coupang/Naver exposure logic - New category entry timing, reading traffic data - Practice: Creating a platform entry roadmap **5) Detail Pages That Create Conversions** - Customers buy emotions and confidence, not products - Designing storylines with emotion → awareness → persuasion flow - Practice: Rebuilding emotional points in your detail page - Actual production including redesign with ChatGPT/editor **6) AI Image·Content Creation Practice** - Quickly generating needed images with prompt design methods - Utilizing Freepik + visual content creation - Practice: Detail page creation and feedback **7) From Zero-Cost Marketing to Paid Advertising** - Zero-cost marketing: Building trust with review-type/experience-type content - Blogs: Combining exposure-focused writing with conversion-oriented structure - Paid ads: Dissecting Naver/Coupang ad structure, ROAS-based operations - Avoiding auto-bidding traps, designing thumbnails/keywords centered on CTR - Practice: Designing ad promotions for your product ## Why It's Efficient This course doesn't just tell you "what to do"— it connects 'product-keyword-category-platform-detail page-marketing-advertising' in a single line, in the order that actually makes money. 2-3 million won courses? There are many good courses. But I'm confident there's no course with this level of quality at this price! The most fatal thing about a 2-hour-a-day side hustle is working hard in the wrong direction. This course is designed to save that time by making you move based on market and customer intent from the start, and structured so that once you build the system, it continues to generate sales.

GPT lecture with 430K YouTube views! Meet the renewed 2025 online lecture!

AI Era! Creative content creation is a competitive edge for office workers. Contents Create Skill directly usable in the workplace, taught by a 10-year veteran office worker.

Learn winning resume principles & know-how and get resume coaching with ChatGPT.

<200% ChatGPT Questioning Methods> is a practical content focused on 'How to ask ChatGPT questions to get the desired answers?' In this course, we primarily use the free version of ChatGPT. Depending on the content, we also practice with some paid versions to provide exercises suited to the learner's usage environment. Through this course, learners will learn how to ask effective questions to ChatGPT and, by actively using various extensions, can boost their work applicability.

The capabilities of AI can expand infinitely depending on how you write your prompts. The benefits gained from collaborating with AI depend on the clarity of your questions and whether you provide sufficient background information. Now, please make full use of GPTs to perform efficient and purpose-driven tasks.

With ChatGPT, create your own content (songs, comics, blogs, books, papers, etc.) and create new businesses.

We've ambitiously prepared a lecture packed with business plan writing know-how, leveraging ChatGPT, to help even beginners apply for the 2024 Pre-Startup Package.

Which AI tool should I learn first? Stop worrying now! - Rated 4.8 by 80 students ⭐️⭐️⭐️⭐️⭐️ - ChatGPT, Claude, Gemini, Genspark, NotebookLM, Gamma, Skywork, Manus, Antigravity, Claude Code, MiriCanvas, Opal, CapCut, and more - Learn the core features of over 15 tools very easily over 20 days. - Through weekly assignments, we provide a course you can "internalize" rather than just "passively listen to." - All-in-one coverage: Prompt Engineering > Image Generation > PPT & Video Creation > Vibe Coding - 4 hours of lecture videos + weekly study materials + assignment certification system

"The resumes and cover letters companies want! Providing all-in-one ChatGPT prompts for fast and effective writing🚀" Increase your chances of getting hired with powerful job-specific keywords and differentiated storytelling!