Me too Lyndal, an oldie and mostly self taught, I did do an IT course many years ago, think it was about the time of Windows 3.1, as I was not up on a lot of things and was volunteering at a place where we taught computer skills to those with impaired vision .  The internet is a completely different ball game now but I believe I have pretty well kept up, old as I am 🙂

Rather than teaching your Uncle a problem loaded, glitchy, non ebay friendly browser like IE why not show him on Chrome, Firefox, Opera, Safari or any one of a dozen other browsers that are more ebay friendly.