We took lessons sponsored by an Orvis flyshop in Fairfield Maine. The main instructor was Jim Rusher of Orvis; the second instructor's first name was Kevin, but I forgot his last name. They taught the basics very well. Both seem to use their spey casting for Atlantic salmon in Gaspe or trout, not stripers.
Right now I am using floating lines with a short furled sinking leader followed by a fluro leader. I'm picking up a Windcutter versa tip today and will get a skagit head line later per Bob Meiser's recommendations for one of my rods that I got from him.
Generally the flies I use are in the 2 to 2/0 range -- deceivers, clousers, grocery pollock flies, some lobster flies, etc