The biggest key to success in snowboarding is confidence. In the beginning you just have to take a leap of faith and do what sounds and feels like it won't work, but once you do it right, then you trust it and work on it. As the Nike slogan says, "Just do it".
yeah uhm haha... u ever hear the expression keep your tips up? yeah keep your edges up when your turning or you will "catch your edge" and faceplant or get whiplash... and some muscles in your body will be sore after your first time snowboarding or doing anything you havent done in awhile let alone ever...