This document is a guide to library resources in the I. D. Weeks Library at the University of South Dakota, Vermillion. The guide was designed to accompany an academic library instruction course, "Use of Library Resources, A & S 111." The purpose of the course is to familiarize students with the facilities of the I. D. Weeks Library; to acquaint students with the basic sources of information that a university student should be familiar with; and to provide practice in using these resources. The course outline and nine assignments are included at the end of the manual. Thirteen chapters comprise this guide: (1) introduction to the I. D. Weeks Library, including library and brief descriptions of the departments; (2) selected library departments and services; (3) miscellaneous services and resources; (4) classification of books; (5) guidelines for using the online catalog; (6) print periodicals titles; (8) electronic indexes; (9) government documents; (10) the map collection; (11) news indexes; (12) biographical information; and (13) essays in collections. The library floor plan is appended and nine assignment worksheets are included. (AEF)