Isn't it great the welcome the newbies get to this site.
Most escorts will lead. Your experience will be just lovely. Pick a girl with verified pics and with reviews. My choice (even tho I haven't seen either) would be Jessica or Honey.
As for age. Some girls prefer the mature man only because he is just that, mature and respectful. What they don't like in some younger guys is brashness and arrogance.