So are tips for the providers normal, rare or expected?  Newbie.
Stuart

by keywords.  This subject has been covered before, numerous times.  I am providing a link to one such discussion.

Indy's, not as much
Agency's YES, as the agency takes a big cut
BUT I find if you have to ASK to how or what to TIP, well, how are you are tipping in a restaurant?

Just do it and TIP BIG

As a newbie you will be tempted to add extra but later I would say only if she does something extra exciting you didnt expect or does a specific act so much better than others.