Hi Frans,
You can install Ubuntu 20.04 or 22.04 on your PC, then use the instructions provided in the BitCurator Quickstart guide (which you've referenced above) on page 11 (Step 2: Deploy BitCurator in Ubuntu 22.04LTS). That will get you up and running quickly.
Additionally, this can also be completed within a Virtual Machine of your choice, and the instructions above will walk you through how to do that with VirtualBox.