@oldmankris Have you already had a look at the SharkFest presentations (https://youtube.com/@WireSharkFest)? Attending SharkFest itself is also a great way to learn more on using Wireshark.
SharkFest Wireshark Developer and User Conference

SharkFest is an annual educational conference focused on sharing knowledge, experience and best practices among members of the Wireshark global developer and user communities.

YouTube

@uhei @oldmankris

Second that. Hansang Bae and others give some great tips.