When you find a writer who really is saying something to you, read everything that writer has written and you will get more education and depth of understanding out of that than reading a scrap here and a scrap there and elsewhere. Then go to people who influenced that writer, or those who were related to him, and your world builds together in an organic way that is really marvelous.

The Hero's Journey: Joseph Campbell on His Life and Work (ed. New World Library, 1990) - ISBN: 9781577314042