Thanks Domenico, found it. Looks like the academia link I found was just the Viola da Gamba Society proceedings with the comments. Quite a lot of material on Claudio’s Bray Baroque site. Much of it is probably rather advanced for me at the moment but it looks a very interesting source. Perhaps I’ll try the Playing the Baroque Harpsichord though. I already have Ann Bond’s Guide to the Harpsichord, which at least starts at a fairly low level. I have been advised to reach Grade 5 on the piano before seriously tackling the harpsichord. I’m not sure how advisable this is but I have a grade or two to go before I get there. In the mean time I’m very lucky to have access to a Kirkmann harpsichord and a Longman and Broderip spinet, as well as my own John Feldberg harpsichord, once I sort out its jammed registers. I’m also getting quite a lot of guided practice in tuning temperaments on those instruments at the Finchcocks Charity so I think that understanding them is quite imporant for me.