Mendeley is a free online referencing system that you can use on the web and on your desktop. You can create your own fully-searchable reference library, cite as you write and read and annotate your PDFs. It also functions as an academic social network; you can create your own researcher profile.
The 5 -minute video (right) will give you a good overview of Mendeley's functions.
Unlike EndNote, Mendeley is not supported by the university. This guide will give you some initial help, and refer you to Mendeley.com help resources online.
Mendeley Help Guides (right) are the quickest and most useful sources of help. These detailed guides are helpful if you have plenty of time to use Mendeley.