At the end of the 1980s an information and network system was developed at the Chemical Engineering Faculty of Technical University of Budapest. Our aim was to provide computer aided communication for departments, administration and students of the faculty. Since its beginnings the development has gone though many phases both the applied software technologies and the range of features offered by the system. At the second part of our article we describe the Chemonet home page (Chemical Information System), which informs the chemistry researchers and students. We introduced a new tutorial which was developed in order to help the Chemical Engineering students' work and study. By this tutorial one can easily and quickly learn the use of ChemWind 3.0.