The aim of this bachelor thesis is to describe in part the public library users’ process when deciding which books to borrow. Focus is on the library users’ experience of the process and how literature exposure can support them in their choice of book. This study seeks to find out to what extent choices are spontaneously made at the library, which elements of exposure that the user finds helpful in the process and which factors usually influence the user in finding new things to read. The data was gathered through 100 structured interviews with public library users. To analyze the result a modified marketing research theory was used, providing a comprehensive view. The decision-making process can be understood as a combination of the orientation or attitude of the library user, the behavior or tactics of the library user and the library environment. The results of the study show four examples of behavior patterns related to library user orientations. The patterns are then linked to different aspects of mediation of literature in the library environment. The study also presents statistics on spontaneous loans and divides these loans into three types. By examining the variety of library users’ behavior patterns and search strategies, this study contributes to further developing the literature exposure of public library collections.