Towards the liaison librarian: transformation of library services to support teaching at the Open University of Catalonia (UOC). The changes over the last two years in one of the two sections of the Virtual Library, the Library Services for Learning (LSL), at the Universitat Oberta de Catalunya (UOC) are described. The main role of the LSL is to provide services for the teaching and learning processes. The article describes in detail the realization of a specific services chart for the University’s faculty, aimed at improving their efficiency in the identification and selection of learning resources for the disciplines taught at UOC