If you want training on Libre take a look at:
https://abcd.care/dtn-education/flash-glucose-monitoring
This is a curriculum that everyone being given Libre should be encouraged to look at and undertake.
As far as DAFNE goes, it doesn't, in its regular form, cover either pumping or Libre, so it doesn't help in using either of them specifically. It's more a case of comprehension and applying another bit of learning over what you might have with the tech.