For a work to be protected by copyright law, it must be an idea that has been expressed and fixed in some sort of medium. The expression has to be original. To be considered original, there must be a “modicum of creativity” in how it has been expressed. In other words, once you create an original work, and fix it on paper, in clay, or on the drive of your computer, so that the work can be reproduced in some format, then the work is considered copyrightable. Therefore, copyright law protects a wide and diverse array of materials. Books, journals, photographs, works of visual art and sculpture, music, sound recordings, computer programs, websites, film, architectural drawings, choreography and many other materials are within the reach of copyright law. If you can see it, read it, hear it, or watch it, it likely is captured by copyright.
Copyright protectable works receive instant and automatic copyright protection at the time that they are created. U.S. law today does not require placing a notice of copyright on the work or registering the work with the U.S. Copyright Office. The law provides some important benefits if you do use the notice or register the work, but you are the copyright owner even without these formalities.