Google “Terraform homelab” and read a few guides on how to use Proxmox, Terraform, Ansible, Puppet, cloud-init, Packer, etc.

A great starting point is being able to write some code that will consistently build a homelab setup, perhaps running a few useful services like Snapdrop, Pihole, OpenVAS, Etherpad Lite, etc. The goal being capable of standing everything up and tearing it down using Terraform and Proxmox (Terraform instructing Proxmox to create VMs and Ansible to configure those VMs with what you need).

There are loads of similar solutions (such as Ansible and Puppet) so don’t be scared of trying a few different guides and wiping the server a few times along the way. It’ll give you a strong understanding of the various tools and, once you’ve done it a few times, you can land on your preferred setup and start building your own use cases for it all.

Hope this helps!