Being of a similarly youthful age as you happen to be, I suggest the following:
Sophistication, Honesty, Grammatical Correction, Honor, and a willingness to sacrifice PRIDE for those you take out on a date.
Just use common sense, be polite, courteous, and treat them like an adult woman. You may think that this would be considered boring, and it may. The trick to coming out on top is to be witty, but not an asshole; strong but sensitive; shy but cute&open (JUST WITH HER).
At the end of the evening of your date, state in conversation how you always feel awkward at the end of dates (while walking up the sidewalk to her front door taking her home), then as you reach the door, then say, "and that is why I'm leaving the 'Saying Goodnight' part [i]ENTIRELY[/i] up to you."
This will put her in a nervous position, and you will probably not get more than a hug & kiss. However, sometimes I've been so lucky as to have girls almost dying to take me inside (they've said so), but they will leave it at that. Then you can be most certain that they like the fact that you let them make an important decision in life, and will most likely leave them dying for another date. A simple psychological trick I learned at the University of MN... It worked well for me so far, and I plan on using this good-bye technique again soon.
Don't be disappointed if you spend $30-$50 on that first date only to get a hug/kiss. Beware of people who want to go into Interior Design or History, It's a SERIOUS indicator of someone wanting to get an M.R.S. Degree (Mrs. So&So)! I know this from experiencing gold-diggers in the past.
Just use common sense, and try to be comfortable (but NEVER fart/burp, that's too comfortable). Make her feel at home with you, and she will learn that you "click". Then slowly test her thoughts on firearms and other politics over a tea or lunch/deli meal on about the 3rd - 6th date, so you know you're not wasting your time. I had to try for 6 months to convert my last GF into liking guns, and now her favorite gun is a GLOCK 19C 9mm. It's nice to see a fresh convert, then take them home for a good afternoon of lovin'.
Sincerely,