Tutoring calls: how to prepare, what to expect

I have a tutoring call scheduled, and would like to know what/how I should prepare to get the most benefit out of the coach’s time.
Should I select a single issue I’m struggling with, like a feeling or a model I can’t work out on my own?
Or a more general area I’m not sure how to approach? 10 minutes feels both long and short so I’m not sure what to expect.
Thank you!