Copyright law applies to nearly all creative and intellectual works
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.
The basic term of protection for works created today is for the life of the author, plus seventy years. In the case of "works made for hire", copyright lasts for the lesser of either 95 years from publication or 120 years from creation of the work. The duration rules for works created before 1978 are altogether different, and foreign works often receive distinctive treatment. More detailed information can be found at the United States Copyright Office.
Works are protected automatically, without copyright notice or registration
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.