Part 1: The Beginning of Everything - The Fundamentals of Deep LearningBefore embarking on our main journey, we will explore the fundamental principles of deep learning, the backbone of modern AI. We will easily break down, with visual aids, how artificial neural networks mimic the human brain to learn patterns, and the concepts of Backpropagation and Gradient Descent, which are the processes models use to find correct answers. You will come to understand how these foundational principles become the master key to training massive Transformer models with billions of parameters.Part 2: An Innovation in Understanding Context - The Transformer Architecture. In Part 2, "Attention Is All You Need."Tokenization and Embedding: We will learn how computers convert human language into numbers and represent the meaning of words and sentences in a vector space through techniques like Byte Pair Encoding (BPE) and Word2Vec. Attention Mechanism: We will delve into 'Self-Attention,' the most innovative concept of the Transformer. The principle of dynamically calculating the importance of words to each other within a sentence to grasp context will be explained through the concepts of Query, Key, and Value. Multi-Head Attention and Architecture: We will visualize the process of extracting rich contextual information by analyzing a sentence from multiple perspectives using several 'attention heads' rather than a single one. We will provide an overview of the entire structure, examining how the encoder and decoder interact to perform complex tasks such as translation, summarization, and question-answering. Part 3: LLM and AI Agents. We will discuss the process of fine-tuning pre-trained models on vast amounts of data for specific purposes, and the importance of Retrieval-Augmented Generation (RAG) technology with LLM hallucinations. Furthermore, we will introduce the concept and real-world examples of 'AI Agents' that go beyond simply answering questions to independently plan, use tools, and solve problems. Part 4: The Future of Development - Vibe Coding Finally, we will introduce the new wave these AI technologies have brought to the software development scene: "Vibe Coding." This is a development method where developers no longer write every line of code manually but rather converse and collaborate with AI through natural language to rapidly implement ideas into prototypes.Core Tool Analysis: We will demonstrate the pros, cons, and practical applications of the best AI coding assistant tools available today, such as GitHub Copilot, Cursor, Gemini-CLI, and OpenAI Codex, through live examples. Productivity Revolution: We will showcase a process where a Product Requirements Document (PRD) is given to an AI agent, which then automatically generates an initial version of the entire application. This will illustrate how developers can break free from repetitive tasks to focus more on creative problem-solving.