This presentation aims to provide practical and comprehensive training on hotel management systems, including Opera (OPERA), Nezill, and Jaras, with a focus on the essential and advanced skills needed to efficiently manage check-in and reservation operations. The training includes an explanation of reservation handling mechanisms, check-in and check-out procedures, guest data management, room status monitoring, handling payments, modifications, and cancellations, in addition to the most important daily operations required by reception and reservation staff. The training also includes practical applications and real-world scenarios to ensure mastery of system usage, enhance staff efficiency, and reduce operational errors.