NixOS noobie w/ a fresh VM wants to integrate your config

[o-az]

I've almost never used Nix or NixOS but would like to start doing so.
I have a freshly created NixOS VM (created on a Mac I use for side project) and want to copy your config.
Is there a simple way to go from a fresh machine to all this setup? I have no idea where to start.

Some system info:

$ echo "$(uname -m)-$(uname -s)"
aarch64-Linux

$ nixos-version
23.05.1852.510d721ce09 (Stoat)

$ free -g -h -t
               total        used        free      shared  buff/cache   available
Mem:            21Gi       485Mi        20Gi       1.0Mi       431Mi        20Gi
Swap:           23Gi          0B        23Gi
Total:          44Gi       485Mi        **44Gi**