Devin Olsen and Lance Egan have put out a series of three videos:
Modern Nymphing
Modern Nymphing Elevated
Adaptive Fly Fishing
They are available on vimeo for about $25 each or on DVD. Well worth the money. Well produced, around 1-1/2 to 2 hours of content each. These accelerated my euro nymphing game considerably.
https://www.tacticalflyfisher.com/books-dvds/
