Boi/Grrrl/?

Ok I'm a biual girl who is closer to the gay side. I love woman who are butch. But I don't understand some of the labels out there/ like does boi mean a girl who wants to be a boy/ halfway ed? I'm confused. Like I know gender isn't and shouldn't be black and white and men and women should be able to genderbend but I'm so lost with all of these terms. Are there still butch women who idenify as women? Sorry if this sounds offensive in any way it's not my intent.