Blueduds where abouts are you?
If you're blessed to be in an area that still has a local fly shop, it can be a great resource-- many will have free fly fishing seminars, casting demos or offer casting lessons for a few bucks-- and some might be willing to take you out back for a few pointers on casting for free.
And another great source of info and a big help to get off to a good start is to consider joining a local fly fishing club affiliated with the Federation of Fly Fishers or a local Trout Unlimited Chapter. A lot of these groups have programs to teach casting, fly tying classes, fishing skills, group outings to local waters and other activities in addition to informative monthly meetings-- and it's a great way to meet some new fishing buddies. It's a great way to accelerate the learning curve.
You can do a search for FFF affiliated clubs to see if any are near you:
Locate a Club
and for TU chapters: Council/Chapter Contacts | Trout Unlimited - Conserving coldwater fisheries
There are also some decent youtube videos out thereon fly casting-- here's one from Lefty Kreh that might help with some tips: