I have noticed that sometimes the layer select icons, the little icons to the right of a layer title are sometimes white and sometimes black ... I would love to know what that means and why they turn black sometimes?
You are referring to the target symbol. If it is blak then there is a special appearance applied to the object (more then just fill & stroke). This is one of Illustrator's central aspects. You should read about it in the manual.
Many thanks for your response ... I assume you mean the 'Appearance Panel' is a central aspect of illustrator, which of course it is. Thanks for enlightening about the 'Target Symbol'. I did assume the two were connected but I was not sure. Thanks again.