The Harry E. Clarks of Canton Ohio (California)

I am trying to research my fathers family history for my childern and grandchildern and would like to give this to them for Christmas. I am having a tough time as I have never done anything like this before and the older members of my family are having a hard time remembering. I know that my grandmothers name is Voilet Ennis Kilpatrick or Reed she was born on August 27th 1900. Her mother was Goldie Mitchell. My grandfathers name was Earl A Clark and he was born July 16, 1896. If anyone has any information that they could share or can suggest any helpful hints I would be most thankful