Start with Gale Literature for introductory information on authors, literary texts, and literary movements.
Note that none of these are scholarly. You can return to find scholarly literary criticism later.
The image below shows a search for information about the novel 1984 by the author George Orwell.
Type in author, title, and/or keyword. Note that it may work better to type the author's surname, then first name.
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Select Topic and Work Overviews, Biographies, Interviews, and other introductory works. In this case, I selected Topic & Work Overviews. Look for longer articles. I particularly like the for Students series with introductory information on Themes, Styles, and Critical Responses to the work.
This excerpt discusses the theme of the rift between appearance and reality, fiction or propaganda and truth in 1984.
Understanding the history of the era in which an author, artist, or thinker lived or in which a piece of text was created will often give you better insight into that work's meaning, symbolism, and themes.
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American Decades (2000s)
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The reference series American History through Literature offers particularly insightful background articles that contextualize literature, history, ideas, and authors.
American History through Literature 1820-1870
American History through Literature 1870-1920