Here I've got two "primitive" objects, a sphere and a cylinder. Currently the cylinder is selected. The panel on the right hand side is my transformation panel and contains all the tools I need to scale, rotate or translate (move) my object around the workspace. Currently, scale is selected.
Objects can be scaled by simply grabbing the handle and dragging it up or down to transform the object along that axis.
The space bar functions as the select tool in Softimage. Hold shift to select a new object - otherwise you'll continue to transform the previously selected object!
Scale - X
Rotate - C
Select - Space bar