This is one of the reasons old dirt riders can often handle road bikes better, especially when the surface is less than brilliant.
"Soft Hands" is what I was always taught, plus keep the weight back a little if you can, and respect the throttle and brake. No sudden movements. You can still use the front brake to slow you down, but gently and only in a straight line. If you must brake in a turn, always use the back, but try to avoid it altogether by getting your corner speed set before you turn.
Practice is the best way to figure it out.
Dirt bike steering is kind of where you stay upright in your body, but turn the bike under you at a lean. As John said, hard to describe here, but go have a look at a few motocross vids and you'll get the picture.