Then Again
Then Again: Web Chron: Sumer, 3500 1900 Bc
Survey of ancient Sumer that describes Mesopotamian civilization's way of life, cities, religion, technology, and so on.
Other
Mesopotamian Civilization: The Land Between the Rivers
This detailed article on the Sumerians provides information on Sumerian writing, myth, education, city-states, and artifacts. Part of a larger world history website, "The Land Between the Rivers," is an excellent introduction to the...
Steven Kreis, PhD
The History Guide: Ancient Western Asia Mesopotamia
This history site offers a wonderful lecture on Mesopotamian civilizations and culture. Includes links within the lecture to in-depth explanations of important ideas and people such as Cuneiform and Hannibal.