what is a book (fiction or not) that taught you something new about sex, sex lives, intimacy or is purely a must read ?

this is NOT the sub to get into it lol, but i am on a personal sexual journey (accompanied by my spirituality) into not just the kink or SW world, but i want to learn how to REALLY please myself and others.

sexually or not, creating a state of equilibrium is the goal.

whether it's your trusty old textbook that taught you the erogenous zones, a newer nonfiction book delving into explaining kink subtypes you're into, tantra or how to make lasting connections or even a fiction book that is so powerfully written it caused a sexual awakening or experience.

give me them ALL to consume: i am your kinky sponge lol.

thank you in advance for any comments 🙏