We can offer basic classes in these great open source applications.
Celestia provides photo-realistic, real-time, three-dimensional viewing of the solar system, the galaxy and the universe.
Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.
It is being used in planetarium projectors. Just set your coordinates and go.