Some resources and useful information about this development technique:
- About Scrum (Spanish) http://www.proyectosagiles.org/
- Agile Software Development http://www.agile-software-development.com/
- Good Agile Project Management software, community / free version available http://www.rallydev.com/
- Scrum project management software, for Windows (Desktop) http://www.scrumdesk.com
- MoSCoW method to prioritize tasks http://en.wikipedia.org/wiki/MoSCoW_Method