Dear Flasher, Pablo's advice is sound. The other important thing is to have a really good scrub just before you leave for the appointment. You will probably be asked to shower again at the girls appartment but no harm being clean to start with. I wouldn't worry too much about presents etc.. as I'm useless at that sort of thing myself. I think most escorts just want you to be punctual, polite, clean and obviously pay the right amount. Don't worry about sexual perfomance (i.e cumming too early etc..). These girls are professional and in my experience don't bother about such things and won't make a guy feel bad about it.
However, at the expense of repeating my self - the choice of who you see on your first visit is really important. Pablo has recommended Patty Baby. While I have never had the privilege of seeing her - she is exactly the sort of girl you should choose - many (almost a hundred) good reviews.
From my own experience, i think any of the following girls would be great for your first experience with an escort:
Vanessa Vanny
http://http://www.escort-ireland.com...sh-escort.html
http://http://www.escort-ireland.com...9-mg-0040.html
http://http://www.escort-ireland.com...ny-albums.html
Jasmin
http://http://www.escort-ireland.com...sh-escort.html
http://http://www.escort-ireland.com...t-outfits.html
Alice
http://http://www.escort-ireland.com...sh-escort.html
I would actually tell the girl that this is your first time with an escort. I know that might sound embarrassing but everyone is nice to a newbie. And she'll probably be more patient and understanding of why you are nervous. Best of luck dude.