Copyright, literally, is “the right to copy.” It guarantees the authors of creative works–including books, artworks, films, recordings, photographs–the exclusive right for a set period of time to allow other people to copy and distribute the work, by whatever means and in whatever media currently exist. It also prohibits copying and distributing without the author’s permission. You own copyright by law, automatically, as soon your work is fixed in tangible form–i.e., the minute you write down the words.