Tertiary sources are excellent starting points! They consist of information synthesized from primary and secondary sources. Examples include:
These resources give you succinct overviews of your topic, explain scholarly arguments, point out interesting questions, and refer you to especially key sources.
The subject encyclopedias listed on this page have a very broad focus, but Collins Library also has hundreds of even more specialized history reference resources, both print and online, that focus on specific regions, eras, or themes. Please search Primo to identify additional encyclopedias and dictionaries or ask a librarian for suggestions.
Not sure where to look? Each of these online collections will introduce you to a wealth of dictionaries and encyclopedias.
Also try the Biography Reference Center, an online database that offers entries on nearly half a million persons.