onemorebrando...It's less about what you should ask him/her, than what they should be asking you! Just curious, but is your "pro" a professional player or a professional instructor...they are two different things (they can be the same thing, but they rarely are). Whoever it is, they should ask you what you expect to get out of the lesson, and then address those issues, along with whatever their teaching plan is. First and foremost, if they don't use video analysis to check your stroke, they are not a highly competent instructor. Using video is mandatory for all PBIA instructors, and vital to quality instruction. Good luck with your lesson, and let us know how it goes. If I were you, I'd bring a video camera & tripod and record the lesson while you do it, just for your own review.