I can't think of anything I learned NOT to do. With any encounter, I just go with the flow. Mine or my lovers! Each person is different, so if I'm exploring my partner, I'm going to explore everything. If I get the sense that what I am doing is uncomfortable, I stop.
@ Mary Ann's comment, I understand how the scent of a woman can be a major turn on. In my opinion, I would rather not have a scent at all and have it brought out from activities than go into an encounter 'au naturale". One man's, or woman's, rose is anothers stinkweed. I want to start out to be an unscented rose with the fragrance brought about by passion! The scent of passion spent can be intoxicating!