Strange advice, but think about them as guys. Treat them as you would your male friends, as they’re just people, and they don’t need some sort of special language or interaction.
Otherwise, just be yourself, even if you do make a fool of yourself sometimes, cause we all do it; we’re not perfect, and we all have our insecurities.
Finally. When you do interact with a girl, have 3 topics of conversation in mind; 3 things you like, that you yourself know are common, like sports, gaming, etc. Then start talking about one…chances are, atleast one of them will spark up a good conversation, HOWEVER, if none work, then frankly, they’re not the type of person for you – friend or otherwise, as you want to have common interests with people in your network 🙂