Take the old pillowcase off before putting the new one on #BlindinglyObvious
Don’t do this:
1. Create a VM to try out some complex multi-step setup process.
2. Work through that setup, making notes as you go.
3. Create a new VM to apply this setup for real.
4. Delete the old VM as it’s no longer necessary.
5. Go to apply the setup to the new VM and realise that your notes were on the VM you just deleted. D’oh!