The Duck has the right idea! And do a little reading on line or youtube as to proper dirt techniques. Power in the corners kick the back out some is a fun start. But, you have to know, dirt riding does lead to crashes, so be prepaired. Smooth gravel roads are a good start. After a few miles build some confidence and pick up the speed as the bike works better "floating" over the gravel. I'm not really one to give dirt advice so read as much as possible and to go out there. Pretty soon you will need to find a used Suzuki DR 650 to enjoy the fun of back roads. Cheap and parts are cheap. Easy to work on and solid as a rock.
Mount Vernon, WA.
tire guy, I'll mount your tires.