A primary source is a document or record containing firsthand information or original data on a topic. Primary sources are created contemporaneously with the topic they describe. Examples of primary sources include:
Summary of characteristics:
"'Making Sense of Documents' provide strategies for analyzing online primary materials, with interactive exercises and a guide to traditional and online sources."
A secondary source is a work that is one step removed from the original source. Secondary sources are created after the fact, and describe, summarize, analyze, or evaluate primary sources. Examples of secondary sources include:
Summary of characteristics:
Geisel Productions Web Series, UCSD Social Sciences & Humanities Library