Are there any places to meet and date single females?

I've lived here in Brooklyn for all my life but had never been one for partying and going out. However, I had changed my options lately and I am asking any advice on which bars, clubs or social gatherings in the city to meet and bond with women who are not in a relationship? I am 28 years of age and seeking a relationship with any young woman my age group but I don't know where to look. Any possible suggestions?