Prestel Training & Thorn 9650

I know this is an old post, but have only just noticed it!
I too had training on Prestel, but this was with Sony (I still have a certificate to prove it) and also some work with Tandata. I do remember the Thorn units.

I did quite a bit of work on the Sony systems, & of course Sony had their parts ordering system on a Prestel CUG. (Closed User Group).

All a long while ago. It’s amazing how much product-specific training I managed to get, most of it now fairly redundant!