So my employer got me a business Udemy account and I want to make the most of it. What are good courses there for a home self hoster?

I’ve got a couple Docker for beginners courses.

Would an AWS Certified Cloud Practitioner be any useful?

I’m looking into networking as well, so I understand VLANs, routing and firewalls.

I have a decent grasp of Linux fundamentals, but I’m outdated in administration as I haven’t been more than a user for the past 10 years.