This is a great 20 minute introduction by Lance Egan, a member of the US Competitive Fly Fishing team,  to Euro Nymphing.  It includes discussions on rods, reels, fly line, building your leader, and fly selection.  This style of fishing is gaining quite a bit of use in TVFF recently, and especially so on trips like the annual Montana trips.

https://midcurrent.com/videos/euro-nymphing-setup-what-you-need-to-get-started/