My apologies; I have a computer running docker, who I hosts a plethora of services. I have an external drive connected to it (because i don’t have a NAS) and have it mounted to my underlying OS on that Docker server computer. And each container than needs it, mounts directories from that drive.
All of this is internal network only. And another server manages VPN connectivity to my home network. So I have remote access to everything I need with minimal ports forwarded.
The reason videos aren’t recommended is because they quickly go out of date. Text is easier to update, and so are screenshots.
The wiki is the most comprehensive guide you will find.
However if you don’t know what you are looking for help on, it is best to search up what issue you are having, then consult the wiki when you learn the terminology you needed to find the page.