I got "the talk" at home, but not very informative, mostly of the soon-you'll-be-a-woman/stay-away-from-boys variety.
We also were subjected to the annual "sex talk" in school from the gym teacher, mostly of the boys-are-sex-fiends/they-can't-control-themselves/you'll-end-up-as-a-teenage-mother-living-in-a-trailer-park-with-a-husband-who-works-at-the-filling-station-and-hates-you variety. Plus a pretty graphic movie about venereal diseases that would have put a sailor who had been at sea for three years off sex permanently.
Mostly, my knowledge of sex, usually referred to as "IT", came from my best friend who had it mostly wrong. I mean, she told me that my parents did "IT" and, well, I was sure my parents didn't do anything like THAT! My mother? No way!