The readme is a bit unclear whether I need to actually *build* any software

[logixoul]

Since the name of the project says it's "instant", I was thinking I'd just download an iso, plug it into VirtualBox and start radioing :)
Then I saw several references to "building" in the readme.

Do I need to actually build stuff before I start using the software?

[bastibl]

The main advantage of the VM is that it can be rebuilt to easily customize it for lectures, workshops, tutorials, etc.
You can also download a base version but something like DragonOS might be better suited for your use-case.