This study guide provides a comprehensive analysis of Online Dispute Resolution (ODR), focusing on the fundamental shift of justice from a physical 'place' to a digital 'service' and the integration of cutting-edge digital technologies. It explores ODR's evolution, legal frameworks, and the pivotal role of technology, referred to as the 'Fourth Party, including Artificial Intelligence, Big Data, Blockchain, and Legal Tech. The book's objective is to equip future lawyers with the skills to navigate the digital justice system, and notably, it employed the capabilities of Large Language Models (LLMs) during its preparation to deepen the analysis and synthesis of complex legal concepts. This guide is essential reading for jurisprudence students and practicing lawyers adapting to the digital transformation of the legal field.