Hey Paul,
You'll like dirtbiking. It's more relaxed because you don't have to worry about the other idiots on the road like you do on the street. It's a great sport and you'll find that the people involved are like one big family. The majority of the riders and their families will be willing to help you out in anyway they can. I'm from Canada and I've been riding pretty much my whole life both in the dirt and on the street. It's great for the kids too because it will teach them some responsability and boost their confidence. There's so much to do in this sport, motocross, trails, flat track, and the list goes on. Always think safty first and NEVER out ride your skill level. Welcome to the sport and enjoy !!! Kenny !!(aka sharky243)