Anatomy of a Scholarly Article: A guide from North Carolina State University Libraries which dissects a scholarly article.
How to Read a Scientific Paper: Video presentation that illustrates how to read through a scientific paper
This video from the ASU discusses different types of articles and how they might be used.
Understanding Primary and Secondary Sources (YouTube Video from Imagine Easy)
Look at the Primary vs Secondary Sources chart, by Brooklyn College Library, so see definitions and examples of primary and secondary sources.