Well, I HAVE learnt a lot. Special thanks to the ladies who have contributed. But I can teach nothing. I have loved (and still do, tenderly) only one woman. We began our sex lives as mutual masturbators only, but learning what worked for us and what didn't.
We tried anal, but I hurt her and we never went back there again. Then we married, but couldn't afford a pregnancy for a while; so (that being in the '60's), she was on the first generation of the pill. That one, you may remember, killed all female desire. Added to our woes were a VERY tough hymen and my size. I got in eventually. but it nearly wrecked us as a couple. I could and did oral her, and hugely enjoyed that; but she got one UTI after another and we had to can that, too.
Our love life really began only after 8 years and four children, by which time I was much better at pacing my orgasm, and she, well able to accommodate my penis, whose dimensions are now an asset. Her duty done, her tubes were tied when our last was born. A repair op for her after he was at boarding school spiced our loving up nicely, and her breasts became jet-assisted take off rockets! Yeeha!!
We worked with what we had and have been an item (married) almost 54 years. Penis size? Same tool, every possible reaction.