All Gods and Goddesses are aspects of the All. Before you start to work with these aspects, you need to learn about them. Listed in the page below is an introduction to the major Gods and Goddesses, but you can also choose from myths that interest you.
The deity you want to work with on a given day will depend on what you want to do. Some deities have a light energy and others are darker. Be aware of the qualities of the deity you are working with. Know that Hecate is wise and that she is associated with the underworld. Athena is also wise, and she is a warior. She does not have as dark an energy as Hecate does.
Most witches are conversant of the myths and stories of the ancient Greeks and Romans, Egyptians, the Celts and the nordic people. Commit to reading some about these ancient cultures.
After you have completed you research, pick one deity you feel you relate to the best.