Not sure where to begin? Try these first.
JSTOR provides access to a digital archive of journals in the areas of Arts, Business, Economics, and Sciences. JSTOR includes the entire runs of these journals, from the very first issue to the volumes published a few years ago. With a small number of exceptions - the "Current Scholarship" titles - JSTOR is a backfile collection and excludes the most recent issues (as part of the terms of the agreement with the journal publishers).