Basically, she won't expect you to ready to film a porno as soon as you walk in the door.  She will take her time to ease your nervousness and gently guide you through the TS experience.

I think most girls enjoy beginners, but some probably don't have the patience.

As for what is included, it will depend on what you want and what she is into.  Look for words like functional, top, bottom or versatile in her ad.  Read the reviews and you will have an excellent idea of what to expect.