Explore refactoring techniques using IntelliJ IDEA in this 56-minute video tutorial led by Bill Wake from Industrial Logic. Learn how to refactor the Gilded Rose application while discovering valuable IntelliJ IDEA features and coding assistant capabilities. Witness the Paradox of Duplication in action and understand how tests and good practices enable safe, substantial code changes. Master fundamental refactorings such as restructuring if statements, extracting methods, changing signatures, and moving methods to improve control flow, readability, and code organization. Gain insights into IntelliJ IDEA techniques, explore the importance of test cases, and follow a comprehensive code walkthrough covering various aspects of refactoring, including updating quality, implementing for loops, composing methods, and handling categories.