What was your introduction to sex? How did you learn what to do?
No. I don't mean "Part A goes into Slot B" or "The sperm fertilizes the egg" kind of crap. I mean, where did you learn about thrusting in and out; how to control the timing of your orgasm; how oral sex worked; that both partners (whether M-F or M-M) could cum by frot?
Who taught you what your boners were all about and what you were supposed to do with them?
No matter how much we might wish it, there is no Faerie Godfather to recite some incantation over the marriage bed to make your magic wand work. How did you know what to do the first time you had sex with a partner?