iTunes - don't know how to moves songs from library to library in same computer I am using iTunes for the first time, and it seems to be very different from Windows OS.

I am trying to do what I would have expected would be a very basic thing - take a song from one library in iTunes and move the song to a different library in iTunes. Everything is on the same computer! I could not find a drag and drop option or a cut and paste option.
Here's what I do. I drag the items from iTunes to a folder, such as one on the Desktop. When you drag items from iTunes, their actual files will copy to a folder or window. I then quit iTunes, launch it again, choose the other library, and drag that folder onto the iTunes window, or to an empty playlist.