This document discusses e-books and their history. It defines an e-book as a digital publication that can be read on computers or electronic devices. E-books offer advantages like portability, environmental friendliness, and note-taking capabilities. The concept of an e-reader was first proposed in 1930 in a book called "The Readies." Early dedicated e-book readers in the late 1990s did not gain widespread popularity until technologies like electronic paper and the Amazon Kindle helped make e-readers more accessible in the 2000s.