Bluetooth Plugin and Plugins in general

Hi there,
I’m trying to add the chromium bluetooth plugin to my App. As I am a total noob with ionic cordova and angular I don’t know really how to get that working.
How do I reference to the plugin?
do I need to add a script link to the html? do I need a controller or a factory?
Or is there maybe an easier way to connect with a bluetooth device?

sorry I’m a bit confused
Thanks for your help