About Selection

It happend that when I selected one object in Object Mode, another object was also selected though I had not selected it. How can I select the single object?

How can I set the sphere one color and set the handle another color?

Right clicking on an object will select a single object and unselect all others. Shift-right clicking will select it and keep other selected objects selected.

If you select an object with right click and two meshes get selected, it is probably the case that they are both part of the same object. Go into edit mode (Tab) select the mesh you want to separate with the LKEY (over the mesh) and use P to separate the meshes into separate objects.

You can assign different materials to different parts of a single mesh by selecting the faces and clicking “assign” in the material index panel in the edit buttons.

It works. Thanks!