The Workbook Chapter on "The Creation of the World and the Earliest Deities" is attached below to be viewed online or downloaded: "Myth_02_CreationAndTheEarliestDieties.pdf." This summary is the easiest and simplest approach to the stories, and it should be read before reading a fuller or more complex version.
If you've done the Workbook packet and you would like to read a sampling of some actual ancient sources, "primary sources," I have also attached below selections from Hesiod's Theogony (700s BCE, Greek) and Apollodorus' Library (100s CE): "Hesiod_Handout_Short_PrimarySources_MJK."
Theoi.com offers a free on-line version of all of Hesiod's Theogony and all of Apollodorus' Library, but you should pursue the entire works only after understanding the annotated excerpts I have made available. These authors mention so many characters that you may often wish to type in the character name at Theoi.com or Google or Wikipedia in order to learn more about each.