Apple's sessions from #jnuc2023 were published on YouTube today and I'm biased but I think you should check out the security-focused one first
S̶e̶c̶u̶r̶i̶n̶g̶ Defending Apple Devices - https://youtu.be/yxovR80sV7Y
Deploying macOS Sonoma - https://youtu.be/MvCM82bh6D0