I'm a newbie and I emailed a provider as requested and asked for a review. She said TER. I checked her out and liked what I saw and read (9-10). A few more emails went back and forth with positive replys by her. Eventually she asked me to tell her about myself. I was truthfull as to my age(50's), personal habits, my job type and could aford her rate, etc. She responded very positively and asked for my phone # and I emailed it to her. A little later the phone rang and her 'agent' called to screen me. We had a pleasant chat and mutually decide I should call her back tonite at 5pm so as to have the best chance at getting the time slot I might want. All in all my gut instinct, combined with my research, says all is well.
  Here is my question: Should I email her today, or tell her agent tonite, that I'm a newbie? Is this something that is expected by  providers? Or can most experienced providers sense this when first meeting and adjust acordingly. I'm not trying to hide anything, just wondering what providers would like. Does this really make a difference at all?

It should make no difference if you tell her you are a newbie or not... but may help if she is an established provider... I woujld wait until you arrive at the appointment before you say anything.

I would let her or her agent know that you are a newbie, that way she will understand any nervousness or awkwardness you may have at the meeting.

Nervousness reads as nervousness no matter the underlying cause of it.  Better she know it is because you haven't done this before than for her to think you have less innocent reason for being nervous.

The ladies go by their gut instincts and by how the client acts, if she knows you are new at all this she will most likely be more understanding of any faux pas, or awkwardness, or nervousness...if she doesn't know she may mistake something you do as disrespectful, inconsiderate, or think you are up to something.

You may not make any mistakes, and you may be calm and do everything correctly so that she would never know...but if you do make a few mistakes wouldn't it be better if she knew ahead of time why you might?

I would (and did) tell her, It will help her prepare for your visit.  She will probably know after a few minutes anyway. If she is good she will help you be comfortable, it is different than civie dating.  Your not going to have to fineness her pants off, and you are going to score.

I recently had my first provider experience.  I told her in my first email I was a newbie.  She was very understanding and I'm sure the whole experience went much smoother cause she knew. I would tell if I were you.

I suspect she already knows, or at least guesses, that you are new at this.  However, you have received excellent advice.  You have nothing to lose by telling her.  I am sure she will want to make your first escort experience one you will want to remember.  I lost my escort cherry three years ago, and I still see that provider every time I visit her city, about twice a year.  We still have some chuckles over the awkwardness of our first get-together, until I confessed it was my first time.  Then she took over and gave me a workout I will never forget.  Good luck!

Just show up. Be clean. Act like a gentleman. Leave your donation in an envelope. Fuck her brains out. And leave.

If you discussed and went through a screening process, she should already know that you are a first timer. They obviously didn't ask you for references.
If you are nervous, simply tell the provider once you get there. If you are nervous, she will probably pick up on it anyhow.

How much time have you booked? Hopefully more than an hour. If you have 90 minutes, you won't be worried about taking a few minutes to chat and get to know each other.

To me, it's not so much a question of whether you're a newbie or not: It's what kind of lover you are. If you are experienced and comfortable with a roll in the hay, then I don't think it's going to matter very much if you've never been with a pro. If anything, the sex will just be better. If you're a little less self confident, quiet, or shy, then it could be an issue. But you know what? It'll be an issue for a while until you get more experience under your belt.

I suggest memorizing these phrases prior to the session:

"Will you suck my penis now?"
"Wow! You really give great head."
"Do you mind if I lick every inch of your body?"
"How 'bout I stand next to the bed and enter you from behind?"
"Do you like it hard?"
"I'm going to come now."
"You are wonderful. I worship you."

You'll be fine. Good luck!

I would not make a fuss but would let her know you are new to this...  suggest that her guidance would be appreciated.  My first turned into an ATF...
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and she'll never know! (NOT!)

The real question is, why do you have the need to tell her? If you're concerned that you may say or do something inappropriate, or that could be taken the wrong way, then follow the guidelines of the Newbie Manual, and those mentioned on her website, and you'll be fine. If it's just to make an excuse for your nervousness, there's probably no reason to give any. You may see many women, and on the first time you'll look and act nervous, because it's reasonable to be nervous. There's allot at stake. But, that's not going to have much bearing on what she thinks of you, as long as you follow the guidelines.

I was so nervous, my first time, that I forgot to tell her I was a newbie, yet she new how to make it a tremendous experience. And, I still get nervous on a first date.

Oh, and one more thing. It can be difficult to distinguish between where nervousness begins and excitement leaves off.

My experience has been, only give the information needed to get you in the door, then just have fun. Often, when I have volunteered information, I have felt like it made the provider suspicious,or uneasy just give her what she needs to get you in the door, and have fun!