Second-order cybernetics investigates the construction of models of cybernetic systems. It investigates cybernetics with awareness that the investigators are part of the system, and of the importance of self-referentiality, self-organizing, etc.
See, for example:

Human Knowing - A Journal of Second Order Cybernetics, Autopoiesis and Cyber-Semiotics.
Chilean School of Biology of Cognition - Offering overview of Maturana's contributions to psychology, 'Ask Professor Maturana', and online archive editions of important articles.
Meta Description: [ Devoted to studying and communicating developments in theory, research and practice of the Biological Theory of Cognition of Dr. Humberto Maturana. And at the same time through this page maintain an interactive personal communication with Dr. Humberto Maturana. ]
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Luis E. Bastias - Contributions to the development of Valparaiso's Autopoiesis Theory
Radical Constructivism - The most comprehensive Webspace on constructivist epistemology (a component of the second-order cybernetics worldview), especially the work of von Glasersfeld and von Foerster
Meta Description: [ People, organizations, and online papers that deal with radical, epistemological, psychological and educational constructivism and second order cybernetics. ]
Towards an Ecology of Mind - Well-organized site addressing (e.g.) Gregory Bateson, Humberto Maturana, Ernst von Glasersfeld, Heinz von Foerster, and George Kelly.
Meta Description: [ Steps to an Ecology of Mind ]
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