There's a lot of material on Copilot.
I attended a workshop by Microsoft on the topic of: Microsoft 365 Copilot Training for Executives
Reference material here:
The art and science of prompting
Microsoft 365 Copilot for Executives
Microsoft 365 Copilot Training Frequently Asked Questions
Start your own Copilot journey with a step-by-step program designed to help you learn the ins and outs. Engage in weekly challenges and access ready-to-use templates.
Replay or catch up! - Watch On-Demand. This event is available for on-demand viewing for 90 days. Click here to access event resources.