Obviously there are some double stops featured in a number of song lessons, but I couldn't see any lesson that feature the general subject of Double Stops. Maybe they are in one or two of the technical lessons but it's not easy to see without looking at all
Now I play a number of songs that have then Dance with me, Daniel, Brown Eyed Girl, I've Just Seen a Face etc but whilst they give a feel for what they can do in a song it would be nice to have a reference to the variances -at least of the typical combinations used to get a better understanding rather than just what is in an individual song
If there is a lesson there can you let me have the name and if not do you think it might be a good lesson to have, something along the type of thing you produced for Triads maybe
