Hecate is a Greek Goddess. She is the goddess of Witchcraft, crossroads, children, the Moon, and other things. For more information, just Google "Hecate." There are sources about her all over the Internet.
Hecate some spell it Hekate is a titan of greek mythology. She was the daughter of Perses and Asteria. Often associated with Demeter and Persephone and was given a place in the Elusian Mysteries. Hecate is a goddess of magic,witchcraft,crossroads ghost necromancy.
Theoi has good information about Hekate.
Have you tried a quick search to see if you can find how to communicate with her? There are various ways to communicate with deities, so you might want to look into it yourself to find a way that you, personally, would like to contact her.
For what the above is suggesting, this would be researching and understanding Greek Religion and religious rites. When trying to involve yourself with any deity, you should understand their historical worship.
As a whole, Hekate is associated with cleansing, protection, guiding, esoteric herbalism (root work), and necromancy.
Hekate is a house hold goddess who protects the home and its inhabitants. In this role, she's an ouranic deity because she's over an aspect of living life. Wine, olive oil, and grains are traditional offerings for ouranic rites.
Interestingly, she has a festival every new moon called Hekate's Deipnon, or Hekate's Supper. (This is happening at the time I'm posting it on my side of the world.) Understand, this is Hekate in a chthonic form so chthonic ritual should be followed. This means she's over the dead at this time. Traditional offerings for this time are boiled eggs, leeks, and onions.
Like all deities, she shouldn't be pigeonholed as a "Goddess of ______________." Deities are more complex than this. There's a lot more than just a wikipedia page about her.