Addressing and aliasing in the home assistant

Good day guys,

I am new to the HA, so please forgive unadvanced questions here.
I am having trouble understanding addressing in the HA - the homeassistant.components.rest.switch notations, for instance. I am not new to the Python and under regular circumstances it will mean to me the importing of the homeassistant module itself and the addressing the subclasses. So the questions I have are:

  • I have Fibaro ZWave lights devices. How can I rename them into the more user-friendly versions (lights.kitchen.strip, for instance), in the cli? Where are these files located?
  • I saw some people using log facility, or something. Is there a reference to understand this too?

Tons of thanks!!!

Cheers

Under the menu: configuration / devices. Or configuration / entities

Thank you!

Every device I add, adds several, if not many, different entries. How can I group, name, manage these in a more convenient way?
Also, there is a file in core.device_registry file which has all of these devices and the database in the root of the assistant folder. Which one is a primary and when the database is used and when are the files?

Thank you,
Regards

Actually, I am keep on figuring it out myself - the database is primarily for the events, so it must be in the core.* files. But the question still stands: How do I match and then use these in a convenient way?