I think I first heard of Hercules from an old 70s cartoon, The Mighty Hercules and, about the same time, I read a paperback comic style illustrated book of the Odyssey.
Later, in junior high, my 7th grade English teacher read stories about Green mythology and introduced us to Bulfinch's Mythology and a book by Edith Hamilton. This was about the same timeI discovered Holmes D&D and AD&D 1e and, a year later, Clash of the Titans (which drove me crazy despite enjoying the film).
Finally, in college, I took courses in Art History (with books by Gardner and others), Cultural Anthrpology, and a History course on ancient civiizations to the Middle Ages- all included lectures on Greek Myth. One of the anthropology courses included lectures on women warriors which led me to do a research paper on warrior women that included a section on the Greek Amazons and the role their stories played in Greek society.