In this age of information technology, the traditional notion of ‘literacy’, which is understood as ‘the ability to read and write’ is far from sufficient. In order to adequately characterize literacy in the 21st century, the definition has to capture the relationship between literacy and new technologies. One of such relationships is the ability to process electronic information. In this section, I discuss the concept of digital literacy and its related concepts in the literature. The relationship between digital literacy and our present study of digital library or digital libraries is also discussed.