Hi Have been skiing Telemark since 2002 I believe (I am not quite sure
It's basically the same as "normal" skiing, always keep the pressure on the foot pointing downwards and let the other ski float backwards.
When you feel that you in control and loose the feeling of awkwardness having one ski behind, you will discover that you much more free doing telemarking then carving.
In my opinion one should practice with some speed (reasonable) since it will make the momentum in turning much easier. You don't have to go all the way down in the beginning (it's okay to cheat a little) since that will come naturally once you get the feeling doing the turns and being comfortable with having boots with a heel not attached to the ski's .
Use your poles in order to create balance but also to determine your next pivot point.
I will be in Zurich in mid February, if anyone is up will gladly go skiing.