The article, refers basic conceptual contributions, to begin to include/understand a new way to manage to the Libraries. Watching it from different approaches, considering the advantages to valorize its intangible assets, we talked about its intellectual capital. Propendiendo to emphasize, one of the greater strengths, its human resources. Those that are expressed through their Communities of Practice. In order to manage by the knowledge, we considered to integrate in the management, as it has supported indispensable for the decision making, to new tools in the field of the Bibliotecología, as they are it DSS (Decision Support Systems- DSS).