This is a great visual demo of fly rod casting errors and how to correct them in a couple of easy steps.
I have been fly fishing for about 20 years, and I still can learn a lot from watching videos like this. Bad habits can often creep in, so veteran anglers can use this as a refresher and get back on their game.
Novice fly anglers can use this to start the right way and save on a ton of frustration, not to mention broken leaders, tippet and hung up flies.
A very good tutorial to keep everything in check by going over the basics. Keep the rod tip down, don't break at the wrist as the rod goes back and pause before bringing that fly line forward. Let the rod and line do the work and don't muscle through. Simple stuff but always good to have a refresher.
This is one of the reasons I love getting a guide when I fish a new area; they are always available to have a look at your casting and give you some pointers, and if they do it for a living they're probably right.
Start with the basics, a good fly rod and work on your casting skills, it will put you in good stead for some winter fishing and the spring.