This document provides an introduction and overview of Mendeley, a free reference manager and academic social network. It discusses how to register for a Mendeley account and download the Mendeley Desktop application. It then covers various Mendeley features such as creating a Mendeley library by searching for articles, adding PDFs and folders, and importing references from databases using the web importer. The document also demonstrates how to cite references in documents using the Mendeley plug-in for Word and OpenOffice, and how to share documents and references by creating private or public groups in Mendeley. Exercises are provided to help users practice various Mendeley functions.