Tgirl Etiquette

[tlover]

Hope I've spelt that right. You will have to forgive my ignorance on this subject, it's all new to me.
I was thinking if i ever met a tgirl how would thay like to be referred to treated etc.
We all have to be politically correct now i know.
Maybe gizmo, elio, or hank can help me here.
For instance when talking about them i know thay don't like to be called shemales (I love this term think it implies a whole new sex) i think they prefer the word tgirl or transgender? i don't know.
When you introduce them to someone do you say this is my girlfriend/partner/tgirl?
Do you treat then as a girl or something completely different, separate, special?
Do you openly discuss her differance or keep stum?
Also i need to know more aobut tgirls in general.
Do thay like to be thought of as girls, or perhaps some think of themselves as that special 3rd sex?
Do thay all want to become total girls eventually, or are some happy to keep their cock and tits etc?.
I sound really thick now, mabey this was a wrong idea, but i could do with some more knowledge some Tgirl Etiquette, i wouldn't want to appear totally ignorant if i met one.
Apologies to guy's with tgirlfriends hope i haven't been offensive in my language and ignorance.