An amazing info-graphic on software testing. Infographic: 6 Reasons for Migrating to Automated Testing Via: http://www.cygnet-infotech.com/infographic-6-reasons-for-migrating-to-automated-testing
Agile development is an umbrella term that describes several agile methodologies which includes Scrum, Lean, Velocity tracking, XP, Crystal, GSD, FDD DSDM
4 Reasons Your Backlog Items Might Really Be Epics - 3Back Scrum & Agile Blog
Scrum Team Jazz Band
This link provides information using the Trucman's Model to form sports teams. It reviews the 4 phases; Forming, Storming, Norming, and Performing to build successful teams.
3 Tips to Using Scrumtastic Storyotypes