Copyright is a legal concept, enacted by governments, giving the creator of an original work of authorship exclusive rights to control its distribution for a certain time period, after which the work enters the public domain.
A copyright is a type of property that gives an author the exclusive right to his or her work. This is especially common when the work enters the public domain. Thus, no one can attach their name to the work unless given permission by the author. answers.ask.com
One of the easiest ways to copy write is to mail your self a un-opened copy of your work. This puts a date to your work, and if unopened, will be proof to the court that the materials inside the packaged belonged to you on that specific date. It is a answers.ask.com