Advance Reader Copies (ARCs) are early versions of a book that are distributed to select readers before the official publication date. These copies are typically sent to book reviewers, librarians, and booksellers to generate buzz and gather feedback. ARCs help authors and publishers gauge public interest and make any necessary adjustments before the final release. ARCs are usually printed in a simple format, often lacking the final cover design and may contain errors or unedited content. They serve as a marketing tool, allowing readers to preview upcoming titles and share their thoughts, which can influence sales and readership upon publication.