I recently stumbled upon this great resource from Orvis. They have created a fantastic video series on How to Fly Fish. Learn from their pro anglers about everything from Roll Casting and Nymphs to fishing the Saltwater Flats, as well as targeting specific species. I was very impressed with the amount of videos available. The other great thing is that most of them are under 5 minutes long so you can whip through them all or watch them multiple times to master a certain technique. I will certainly be watching many of these videos again while I wait for the weather to break. Remember, if you can't get out on the water, tie the pop tab off a soda can onto your tippet and practice in your yard. There is very little pressure when fishing in your yard and you can focus on the techniques you learn in their video series. There is also a link to it here.
Orvis Fly Fishing Learning Center
One of the reasons I love fishing in the Mid-Atlantic is that we have the luxury of experiencing all sorts of different bodies of water. If you can deal with the traffic getting to your destination in and around the area, we have great opportunities to chase many species of game fish in almost every condition possible.