Hey, good luck on your journey. I would recomend Lady Cerise, there are a lot of reviews here, she would be very good with a first timer, based on my personal experience with her. Very good to talk to.
Here is her website.https://www.ladyjaycherie.com/home
I would also recommend Mistress Maya Odell as well. She is also very easy to talk to and explain your needs, wants, and desires, plus any fears you might have which I think is normal for first timers.
Her website.https://datemaya.com