Effective delivery methods for O&M staff training include classroom instruction, on-the-job training, computer-based training, and hands-on simulation exercises. Classroom instruction provides a comprehensive overview of the system and its components, while on-the-job training allows staff to gain practical experience. Computer-based training offers flexibility and convenience, while hands-on simulation exercises enable staff to practice troubleshooting and problem-solving skills. A blended approach that combines these methods can be particularly effective in engaging staff and promoting knowledge retention.