I just 'showed up' at my first AA meeting without really knowing much and without knowing any alternatives (though in my area there arent many).
I had no idea what I was doing, I went to a daytime meeting in a rough area, but I was very warmly welcomed and the women came up to me and had a chat right away, which was nice. I've been to women's meetings too, I like them, we certainly share about different things. I don't hear too many women talk about intimacy or motherhood in general meetings, for instance. But I'm pretty comfortable in either type.
I'd probably recommend looking up the options, seeing what sounds right for you and then just giving a few options a try.