Trademe sales of laptops/PCs

[nzoomed]

Something else im doing is installing linux on the users old computer and letting them play around with it so they get the feel of it and demonstrate that there is a way out of all this.
For most basic users who dont care about games and only want to watch youtube and use email, etc, they will be just fine.

I'd be interested in trying Linux but it would have to be a DIY installation.
Where do you suggest I go to download it?

download a kbuntu image from here https://kubuntu.org/getkubuntu/
and use rufus to write the image to a USB stick, you can boot it off the USB and try it out before you even install it.