Has anyone studied what might be the best user interface to operate a program for people who are new to computing.

Menus only?
Menus and big buttons?
Toolbars?

Seems to me that new users
might not be too handy with a mouse...
might get lost easy if forms minimize...
might get confused if more than one form can be open at one time...

and if you mow your yard and find a car u
might be a redneck!

Thanks