Articles and Books: There are several good books and articles on Scrum, including:

Sutherland, Jeff (2014) Scrum: The Art of Doing Twice the Work in Half the Time, Crown Business.
(Order from amazon , order from Barnes and Noble , compare at bigwords , compare at CampusBooks4Less , order from Chegg , or search eFollett )

Rubin, Kenneth (2012) Essential Scrum, Addison-Wesley Professional , Reading, MA.
(Order from amazon , order from Barnes and Noble , compare at bigwords , compare at CampusBooks4Less , order from Chegg , or search eFollett )

A variety of books concerned with Scrum are available (to members of the JMU community) from Safari Books Online, including:

Tutorials/Guides: There are several WWW pages that can help you learn and use Scrum, including: