That's a pretty general question. Every woman is different. We like to talk about our interests, and as every woman's interests will vary, so will their chosen topics of conversation. I would try to figure out their interest first, then ask more about those. Family is usually a good topic, and a good starting place.
Ask a woman about her personal interests and hobbies, then ask questions and talk about those. Every woman has unique interests, listen to each individually.
Women often love to talk about other women, typically in non-flattering ways. They also enjoy discussing celebrity lifestyles, fashion, men, some aspect of their bodies, and other seemingly mundane topics.