Here is one of the top of my head; perfectmediaserver.com.

I’d say it boils down to what you see yourself hosting, what do you need/want? There are many great YT content creators out there documenting their experiences, tips and guides. HardwareHaven, Raid Owl, Jeff Geerling, Christian Lempa, TechnoTim and Wolfgang to mention a few.

JupiterBroadcasting has a wide variety of Podcasts dedicated to both selfhosting and linux stuff if that should peak your interest.

If you need tips for what to selfhost, here is another great resource :) github.com/awesome-selfhosted/awesome-selfhosted