Sculpt

Sculpt puts five verbs on the bar. Raise pulls the ground up. Lower pushes it down. Smooth softens what is already there. Flatten levels the area under the brush. Slope grades it.

Beside them is a Brush pill that opens and closes the settings panel, so you can work with the panel out of the way once the brush feels right.

The panel carries three sliders you will use constantly: Size, Strength and Falloff. Size is how much ground the brush covers, Strength is how hard each stroke pushes, and Falloff is how quickly the effect fades towards the edge of the brush.

A high Strength with a tight Falloff makes sharp features. A low Strength with a wide Falloff is how you get hills that look like hills.

Under the Advanced disclosure there is a Shape grid for choosing the brush shape, a Slope range that limits the stroke to ground between two angles, a Jitter slider, and an Align to view toggle.

Slope range is the one worth learning early. Set it and a stroke only affects ground already within that range of steepness, which is how you carve a valley floor without dragging the cliffs down with it.