Looking for background information and overviews, but want something more reliable than Wikipedia?
All of the reference tools below--encyclopedias, dictionaries, bibliographies, and more--have been designed by expert scholars to provide overviews, as well as help researchers get their bearings on key scholarly literature in a given area of study.
Oxford reference tools offer synopses of key topics and themes in different geographic regions and disciplines. While not focused exclusively on Judaism, the encyclopedias and bibliographies below contain a good share of articles focused on Jewish and/or Israeli history, culture, politics, and/or religion.
Credo Reference can be helpful for basic background information and overviews of countries, people, and major historical events: