I have an iPad and an iPhone. I assume it would work on an iPod similarly to the way it does on an iPhone.
At the bottom, click on the Documents button to see a list of the files you have copied into Reader. Click the Edit button at the upper right. You'll see buttons to create a folder, duplicate a file, move a file into a folder, rename a file or folder and delete a file or folder.
Click on a file or folder to select it (red checkbox appears) and use the buttons I just described.
Steve, my problem was that I needed to update from the existing earlier
software version for my iPod Touch - after an update to the current version
i can now organise pdf files (ie rename & move). Tnx for yr help to get me