Literary Theory - This overview of literary theory from USC Upstate covers the basics of the topic and the questions it explores.
Literary Theory and Schools of Criticism - This resource from the Purdue Online Writing Lab provides excellent overviews of the various types of literary theory, from post-colonial criticism to ecocriticism to critical race theory.
Rhetorical Situations - From the Online Writing Lab at Purdue, this explores what rhetoric is and how it relates to writing through examples, videos, and writing.
Classical Argument - Also from OWL, this provides an understanding of the elements of rhetoric, its structure, and how it was used in classical times.
Visual Rhetoric - This information from OWL explains what visual rhetoric is and how to analyze visual documents, a particularly useful skill for art students.