Educate yourself and get actively involved with an agency. I would open my door to a women as opposed to a man. People will spill their guts to a women when they won't give a man the time of day. We're sweet and nice and we're not out to hurt anyone. By nature we're more detail oriented.
Woman are generally more compassionate.
We are also natural for undercover work. I like that. I know of only one. I did not hire women then because I just did not think they would make good investigators. It was 1976 before I hired the first woman investigator, a woman who really proved herself and proved to me that women make excellent investigators.