If you want something that works without you fretting with the base system too much, and gives you a decent GUI to handle the base: Proxmox. Run VMs, run containers on said VMs, and experiment as much as you would like.

I will personally not be doing this (I plan to run Alpine as my base instead of Debian, even though I hold the latter in very high regard), automate provisioning with Ansible, and exclusively use Podman instead of Docker. I'm willing to go through the pains of not using Docker directly, but at least I'm not learning how to run everything on k8s (which is not a bad idea at all, but for most homelabs without HA, it's overkill).

Learn networking, learn container orchestration, learn GNU/Linux (or in my case, non-GNU/Linux - yes you plebs, musl is good) security, auth basics, UNIX permissions, general automation, and give yourself time.

Also, do not become the family system-admin without having a fair bit of experience doing this already. You don't want the homelab becoming a job, which means getting to fix it at your own schedule, not when Jellyfin is broken and Wifey is bearing down on you because you cancelled Netflix in favour of your Linux ISO-powered library.