FITness also involves an understanding of information resources and how they are mapped into technological and economic structures, and how these resources interrelate. In essence, individuals need to form a conceptual map of information space. For example, they need to be guided in developing mental models of the relationships among documents on the Internet and in proprietary databases, library collections, and the like as a basis for learning to evaluate what information sources are likely to be most appropriate for their various information needs.