In order to allow you to get started, you will find a few definitions.
A “top” could be the active partner in rectal intercourse. A “bottom” may be the receptive partner. These functions define just exactly what you’re physically doing in intercourse — absolutely absolutely nothing more.
A base is not “the woman.” Bottoms don’t have actually to be smaller, submissive, or feminine. A top is not “the man,” and doesn’t always have to masculine or dominant.