It's in red at the top of the main newbie page.  You can ask for a clients handle, however, some clients will not want to give it to you. They want to hobby anonymously.  At the end of a session, assuming it's gone well,  ask the gentleman if he is familiar with TER.  If he answers yes, you can ask him if he would might write a review for you. Don't make a big deal of it.
The topic of first reviews for escorts, is much discussed on this board, You can do a search to read other threads on this topic.  It's the old chicken and egg story. Good luck

As a semi-newbie hobbyist, I have found that when I mention my membership in TER it is eases the mind of the escort. She feels more comfortable that I am not LE. I always ask girls if they have reviews anywhere, since I only have the membership here. I don't believe there is anything you can find out about me by looking up my handle other than what city I am in and which ladies I have seen (how it went with each). By reading the reviews I have written it gives the girls a sense of what I am expecting and what I'm looking for. If they don't offer certain menu items that I have written about, then they can let me know upfront. After only 6 weeks in the hobby, I am a very firm believer in the review process. I have only had less than stellar visits with un-reviewed women. All the reviewed girls have met my expectations.