Thanks everyone
,
the problem here on my part is that I have not yet developped sufficient feeling for folders and such.
And the important thing here would be to put all these 'useless' subfiles into a folder or subfolder where they dont bother.
It may also come useful if I delete the zip.folder as soon as the programme has been unzipped to limit confusion-possibility
"unzip", "unpack", "extract" are all the same, right?