Most historians publish their work in books. So, for many topics in history, your best starting point is a good recent scholarly book. The easiest way to find that book is to ask someone else who is knowledgable about your topic -- for example, your junior seminar instructor or spring JP advisor. But a thorough search of the library catalog is also essential. Here are some tips on finding books about historical topics in the Princeton University Library Main Catalog.
Once you have a book in hand, read it. Alas, there are no shortcuts to this part of the research process.
While books are very important, historians also publish their work in articles in academic journals. The easiest way to find journal articles is to search a bibliographic database that covers your topic. For easy access to all of Princeton's subscription databases, start from the library's Find Articles & Databases list. Most of these indexes are linked to full-text databases where possible. Use the "Findit@PUL" button to check for availability of full text.
Every historian needs to know about Historical Abstracts and America History & Life. These two databases cover US and world history comprehensively, except for ancient history. Get in the habit of checking one or both of them early in the research process for almost any topic in history. I like the "Advanced Search" feature that allows you to limit your search to material about a particular decade or century.
A few pitfalls to watch out for:
Caution: Most of these indexes are linked to full-text databases where possible, but keep in mind that many journals published before circa 1990 have not yet been digitized, so you will need to look for print editions of those journals in the Firestone stacks. Use the "Findit@PUL" button to check for availability of full text or the call number of the print edition of the journal.
Princeton subscribes to a very large number of article indexes and research databases that you can use to identify both primary sources and secondary literature on your topic. It can be a challenge to discover which other databases might be useful for your topic.For more help, ask me or another subject specialist, or check the subject lists at http://libweb.princeton.edu/catalogs/articles.php?subjectID=21