If you wish to find a specific book on the shelves use MultiSearch to find its location. MultiSearch will indicate whether the book is available to borrow, and the call number at which it is shelved.
Some helpful areas to browse:
BL700 - BL820 Greek and Roman Religion
BR160 - BR240 Early History of Christianity
CN1 - CN1100 Ancient Epigraphy
DF10 - DF289 Ancient Greek history
DG11 - DG365 Ancient Roman history
PA3051 - PA4505 Greek literature
PA6000 - PA6971 Latin literature
But remember that not all books are on the shelf. By using MultiSearch you will find ebooks and books from the ARC as well.
In addition to the physical books visible on shelves, the library subscribes to many collections of electronic books. You can find these using MultiSearch.
The following are good places to start looking for book reviews. Many of the journals listed also contain extensive review sections.