Some important links pertaining to project management

Scrum - http://en.wikipedia.org/wiki/Scrum_(development)
Application Lifecycle Management - http://en.wikipedia.org/wiki/Application_lifecycle_management
Rapid Application Development - http://en.wikipedia.org/wiki/Rapid_application_development
SDLC (Systems Development Life-cycle) - http://en.wikipedia.org/wiki/Systems_development_life-cycle