Copywriting involves writing text to advertise or market a product. There are four main types of advertising: complex, high involvement, explanation, and abstract. Effective copy is succinct, single-minded, personal, keeps a simple focus, and uses conversational language. Copy for print includes display copy like headlines and body copy for the main message. Headlines can be direct or indirect action. Television copy uses techniques like action, demonstration, storytelling, and emotion. Planning involves storyboards and considering visual and audio tools. Copy for the internet thinks of the medium as interactive and focuses on standing out amid online clutter.