Ruby Master is a GPT focused on teaching Ruby programming language and creating illustrative code examples. This tool is designed to help newbies as well as experts with their Ruby programming needs. It functions by allowing users to engage in interactive chats on various topics related to Ruby programming. Ruby Master presents an accessible environment for learners of all levels to ask any questions they might have about Ruby programming, from topics in the course and installation instructions to resolving issues like slow-running scripts. A key advantage of this tool is its integration with ChatGPT, which requires a subscription to ChatGPT Plus. Learners can sign up and have access to Ruby Master lessons, and given the GPT's nature, they can expect an interactive and engaging learning approach. The well-structured prompts enhance the learning process. Starting from basic level discussions like 'How to install Ruby?' for beginners to more complex ones like 'Why is my Ruby script running slow?' for advanced learners, Ruby Master fosters a comprehensive understanding of Ruby. It also provides users with an opportunity to understand the different topics included in the Ruby course, enabling them to enhance their competency in this specific programming language. Ruby Master was designed by Edson Dasilva, lending experience and expert knowledge to the workings of this tool. Overall, Ruby Master offers a well-rounded platform for learning Ruby in an interactive, efficient manner.