Adobe Digital Editions: A free software program that allows you to download ebooks and transfer them from your computer to a portable device, such as an eReader. To download Adobe Digital Editions, click here.

App: Abbreviation of "application." These are software programs you can use on your mobile device, such as an iPad or Blackberry. For the OverDrive Media Console app, click here.

DRM (Digital Rights Management): DRM regulates access to eBooks and upholds any restrictions put on the eBooks by the publisher or copyright holder.