What bucho said.
And look at the DVD's from our own Neduro here http://www.dualsportriding.com/
and the shane watts dirt wise dvd's and schoolhere: http://www.shanewatts.com/
Also the Jimmy Lewis riding school http://jimmylewisoffroad.com/
If you ask in your regional forum someone should be able point you at local pro who instructs too, or offer to take you riding.