Welcome, Paul,
I think that you might find it difficult to encourage someone to give you lessons as such, in the current pandemic situation. Like you, I'm not a trained engineer, but self-taught mangler of metal. There's a lot to be said for getting some good books and doing a bit of reading before switching on any machine and there's no better substitute than making something simple on the lathe and getting to know its (and your) capabilities, even if it's only a pile of swarf. Just remember to keep your body parts and anything attached to them out of the way of the whizzy-round bits!
Good luck with your machines and the Ariel restoration. I'm sure many on here, me included, would be interested to follow the rebuild.
John
Some suggested books:
L. H. Sparey – The Amateur's Lathe
Ian Bradley – The Amateur's Workshop
Harold Hall Various books in the Workshop Practice series
And of course both Neil Wyatt and Jason Bellamy have produced books on the basics of lathework and Milling machine operations respectively available from ArcEuroTrade.