The University Library in Warsaw as one of the biggest academic libraries in Poland, serves a great amount of users every day. The major role in this process play the workers of Information Services and Training Department. The article presents every day work of eight subject librarians and four employees of Information Desk. The librarians provide information activity in the wide meaning – they promote the publications, take an active part in creating the book collection, take care of the high level of users’ service. The librarians also improve their skills regularly and extend professional knowledge. According to the conference’s topic the author would like to point at the relationship: Professionalism = information + education. Thanks to being involved in so various activities the librarians are the active participants of education process (including adult education), they become the specialists in their disciplines, advisers, library’s service promoters and trainers at the same time.