@edgarblythe,
It sounds like you have your mind made up Edgar. But, should you change your mind it it pretty easy. There are several ways to do it, for example this one.
1) Insert a thumb drive into the usb port in your old comptuer/os
2) Drag your work file or files into the folder.
3) Eject thumb drive .
4) Put the thumb drive into the usb in the linux computer (or if it is the same computer, just leave it).
5) Double click on the work files in linux (on Ubuntu, they will automatically open in LibreOffice).