Abstract
Digital library is one of the library services that provide information resources and searching tools. University of Tsukuba Library provides various kinds of tools, especially "MetaLib" and "SFX" are powerful tools. MetaLib is a metasearch engine, which conduct simultaneous searches in multiple, and often heterogeneous information resources. SFX is a linking system, which allows context-sensitive linking between Web resources. In this paper, we report a trend chart of utilization of digital libraries based on access log analysis. Moreover, we made a tutorial of the digital library system of University of Tsukuba, and evaluated the effect. It was found that the numbers of utilization of the system are increasing. The tutorial did not develop new users, but led existing users to navigate to other effective services.