Recommended practices:

 * TestDrivenDevelopment is even more important than comprehensive testing
 * SourceCodeRepository
 * AutomateTasks
 * UserStories
 * ControlDependencies
 * LayeredArchitecture
 * RefactoringCatalog
 * PatternsCatalog
 * IterativeDevelopment
 * Getting things DoneDone

Discouraged practices:
 * CircularDependenciesSmell

Also see:
 * XpPractices
 * ScrumPractices
 * [[http://www.jamesshore.com/Articles/Quality-With-a-Name.html|Quality With A Name]] by Jim Shore
 * [[http://agileskills.org/download.html.en|Essential Skills for Agile Development]] by Tong Ka Iok is available for online reading or purchase.
 * [[http://www.bossavit.com/pivot/pivot/entry.php?id=289|A handy heuristic for auditing source code]] by Laurent Bossavit