Book reviews can help you by:
For Scholarly/Academic Reviews:
Start with a general search tool, like ScholarSearch, and then try databases within a relevant discipline (check Subject Resources for recommendations).
For Reviews in Popular Magazines:
Start by using ScholarSearch, but do not select "Peer Reviewed."
For Older Reviews:
Books that are 30+ years old may not be may not have reviews that are indexes in Scholar Search. Instead, check:
Questions? Need Help? Email reference@drew.edu
Drew University Library, http://www.drew.edu/library