Browsing for books on the shelf can be a very useful way to gather material on a topic. Seymour Library uses the Library of Congress call number classification system, and all materials on a topic are shelved together. For religious studies, try browsing these sections:
BL 1-2790 Religions. Mythology. Rationalism.
BM 1-990 Judaism
BM 495-532 Sources of Jewish Religion. Rabbinical Literature
BM 650-747 Practical Judaism
BP 1-253 Islam
BP 100-157 Sacred Books
BP 174-190 The practice of Islam
BQ 1-9800 Buddhism
BR 1-1725 Christianity
BS 1-2970 The Bible
BT 10-1480 Doctrinal Theology
BV 1-5099 Practical Theology
BX 1-9999 Christian Denominations