As I mentioned previously, I did find the file and dragged it to the desktop. I found it by clicking on the Hard Drive icon and typing in com.apple.finder.plist. However in order to do it the right way in the future I spent some time this evening trying to do it exactly the way you spelled it out. The closest I could come was hitting Go in The finder menu and then clicking on the Home icon with my name on it. I clicked on the Library folder, then clicked Preferences, where I found com.apple.finder.plist.
That brings me to your current thread. This may show my inexperience, but i don't know how to do Get Info for the file that is giving me trouble. If it involves opening the file itself, then there is another problem. Although the com.apple files were created by I Photo, when I try to open them it tells me they are unreadable, so I clicked on the Gear icon and chose Open With, where I chose Other. In the Choose Application I chose the Microsoft Office App.---but there is only one way to close the window and that is by clicking Cancel at the bottom, thereby undoing the entire procedure.
In essence this problem is becoming more convoluted by the minute and I would understand if you chose not to get further involved.
Thanks