When American archaeologists discovered a collection of cuneiform tablets in Iraq in the late 19th century, they were confronted with a language and a people who were at the time only scarcely known to even the most knowledgeable scholars of ancient Mesopotamia: the Sumerians. The exploits and achievements of other Mesopotamian peoples, such as the Assyrians and Babylonians, were already known to a large segment of the population through the Old Testament, and the nascent field of Near Eastern studies had unraveled the enigma of the Akkadian language that was widely used throughout the region in ancient times, but the discovery of the Sumerian tablets brought to light the existence of the Sumerian culture, which was the oldest of all the Mesopotamian cultures.
Although the Sumerians continue to get second or even third billing compared to the Babylonians and Assyrians, perhaps because they never built an empire as great as the Assyrians or established a city as enduring and great as Babylon, they were the people who provided the template of civilization that all later Mesopotamians built upon. The Sumerians are credited with being the first people to invent writing, libraries, cities, and schools in Mesopotamia (Ziskind 1972, 34), and many would argue that they were the first people to create and do those things anywhere in world.
For a people so great, it is unfortunate that their accomplishments and contributions, not only to Mesopotamian civilization but to civilization in general, largely go unnoticed by the majority of the public.
Good 1 hr pass time
I would recommend if your looking for a quick beginning session on Sumerian history