I’ve used them and can find a lot of stuff that isn’t available on the more open seas, but maintaining ratio is a big issue, not sure if it’s my setup or the tracker itself, so I can’t download as much as I want to.

I think there is a way technically with something like trueimage or clonezilla, but I’ve never used it. Always thought of my VM as a learning tool, and then used what I learnt to fresh install on real hardware

Don’t wait. Experiment now in a VM to learn the basics.