Thank you for this excellent thread. Like many I started off reading Twinkle and Bunty whilst supplementing them with the various older 1970s albums of Diana etc that I used to buy from jumble sales. They always contained some great stories.
I'll always be grateful for the sex guide in Mizz for teaching me loads, including that there's sperm in pre cum, so the withdrawal method isn't safe. Not that I've ever tried it, but a mate of mine got pregnant by a selfish non condom wearing bloke when she was in her late 30s.