In 1990, Peter Senge wrote one of the most influential business books of all time. “The Fifth Discipline” revolutionised many companies’ approach to knowledge management, and introduced the business world to systems thinking in an accessible way. (Get it at Amazon.com or Kalahari.net).

There is a great summary of the five core disciplines, and, in fact, the whole book, at: http://www.infed.org/thinkers/senge.htm#_The_core_disciplines.

There is a high level executive summary of most of the key concepts related to “Learning Organizations” available at: http://www.skyrme.com/insights/3lrnorg.htm.