So I come to T-GAF for pointers to make the experience more comfortable for me and her
Okay, my thoughts.
Don't go the "they're extra feminine" route. That's not true. Some are, some aren't. People are people, and people in every social group out there show a wide range between each other.
Be ready to have people call you a "chaser". Whatever on that. Every one of us has preferences, physical traits that really turn on on, "types" we'd like to have sex with, etc. The problem is when you see trans women as
only being good for sex, or will have sex with one but won't have a relationship with one.
Go into the date like you would with any other girl, because that's how we want to be treated. If you wouldn't do something on a day with a non-trans girl, don't do it with her. If you would, then do it. (Unless those things you'd do are creepy / illegal / immoral.)
Don't bring up
anything about her trans-ness until you know how comfortable she is in wanting to talk about it. Some trans girls don't want to even think about or be reminded of that. Some are willing to say a few things, at the right time and in the right place. Some are totally up for answering questions and telling you about their history. Don't treat her like she's some lab experiment, or like she's someone there to teach you about a part of the world you maybe don't understand fully.
Have interest in her beyond her being a girl with an extra bit.
If you have sex, make sure you know the boundaries. There's this mentality sometimes that if you're trans, that means you're a porn star, or you're kinky, or whatever. Find out what she is or isn't okay with. Make sure you clearly define the kinds of things you'd want. A little talking beforehand will probably go a long way to providing for a more enjoyable, pleasing, comfortable experience for both of you.
Establish what you want early on: just a friend, a one-tim date, somebody to make see more than once, girlfriend, sex partner, whatever. Trans people are in a weird place in life where they can feel like everyone either just seems them as something to fulfill a fetish, or something to be totally avoided. Don't make her think you want something more if you don't.
Understand that there is no "average" when it comes to trans girls. We're all different. So anything I could say on what I'd be like on a date could be totally different for her. Same with everyone else on this forum. She's a human being like anyone else, so the only way to really get to know what kind of person she is is by going out with her and learning.
Edit: Oh, and be aware that it's quite likely she won't be able to get a full erection, if that's something you're concerned about. While it is possible to have a hormone regiment that helps you to keep the ability to get full erections, if your concern is progress not penis that's something that absolutely suffers. I think trans girls in porn have to take Viagra or whatnot to get the kind of impressiveness they're showing off.