An e-book, or electronic book, is a digital version of a printed book that can be read on a computer, tablet, or e-reader device. E-books are often available in various formats, such as PDF, ePub, or MOBI, allowing for compatibility with different devices and software. They can be purchased or downloaded for free from various online platforms, making them easily accessible to readers. E-books offer several advantages over traditional printed books, including portability, adjustable font sizes, and built-in dictionaries. Many e-readers, like the Amazon Kindle or Kobo, also provide features such as highlighting and note-taking, enhancing the reading experience. Additionally, e-books can be updated easily, ensuring that readers have access to the latest information.