Arduino and Notepad++

I have installed Notepad++, but I don't know how to use it as Arduino editor.
I have tried to read messages in the thread: Notepad++ User Defined Language for Arduino.
I downloaded NPP Arduino plugin. It was a .zip file and I had no idea what to do with the unzippid files. The insructions said something about .dll files etc. aarghh. So could somebody please explain to me how to use NPP as Arduino editor with ability to at least compile, and possibly to upload the compiled program to my board. There is so much jargon here that I would appreciate a simple explanation like: do this and do that.
TIA.

Not sure what you are asking.
I set "use external editor" in the preferences (Arduino IDE).
Use notepad++ to edit the sketch, save as necessary, compile in the IDE as usual.

I don't know what the Arduino NPP plug-in does but you don't need it to use NPP with Arduino. The idea is that with the 'external editor' selected in the Arduino IDE, it doesn't let you edit your source code but does let you do all the other stuff to do with compiling and running it; you are expected to have opened your source files in whatever external editor you prefer and save your updates to disk before you go back to the Arduino IDE to compile/upload the sketch.

LarryD:
Not sure what you are asking.
I set "use external editor" in the preferences (Arduino IDE).
Use notepad++ to edit the sketch, save as necessary, compile in the IDE as usual.

Ok, thanks!
I changed the preferences.txt adding: editor.external=C:\Program Files\Notepad++\notepad++.exe and checked File/Preferences [ ]Use external editor in IDE.
When I opened the example SerialEvent.ino in Notepad++ and pressed upload in Arduino IDE, I got "Error compiling"
So what am I doing wrong, thx?

Lol!
I found the solution: I have to save the sketch in Notepad++ before uploading to my board.

I have to save the sketch in Notepad++ before uploading to my board.

Which is exactly what LarryD suggested.