A new practical guide has been released to help legal professionals understand and use artificial intelligence tools such as ChatGPT, Claude, and Mistral in their work. The guide is aimed at lawyers, notaries, legal scholars, and law students who want to learn how to use AI in a structured and responsible way. It covers what AI can and cannot do, outlines the risks involved, and provides guidance on how to use these tools securely in legal settings. The guide introduces the concept of prompt engineering, which involves crafting specific instructions to get the most accurate and useful responses from AI systems. It teaches legal professionals how to apply these techniques to their daily tasks, helping them improve efficiency and effectiveness in their work. The guide emphasizes that while AI can be a powerful tool, it should never replace human judgment or responsibility in legal matters. One of the key features of the guide is its catalog of 100 ready-to-use prompts, which have been tested and can be customized to fit different needs. These prompts are organized into ten categories, including saving time, writing better, drafting legal documents, communication, promotion, analysis, organizing information, managing human resources, teaching and learning, and thinking with AI. This classification helps users quickly find prompts that are relevant to their specific tasks. The guide provides a complete method for increasing productivity while ensuring that legal professionals remain in control of their work. It encourages the use of AI as a supportive tool rather than a replacement for human expertise, reinforcing the importance of maintaining ethical standards and professional responsibility in the legal field.