Internship Interview Help!

<p>First off..I'm a high school junior.
I have a phone interview with the managing director of a reasonably large financial service company coming up..I'm interviewing for a summer internship on his team, mainly as a watcher/learner. Anyone know what kind of prep I should be doing..or what kind of questions to expect?</p>

<p>Also, it is likely that I will have an interview with at least one bulge bracket firm for over the summer, so would it be in my best interest to go with a smaller firm or the larger BBs (assuming I get the position(s)..which hopefully I will)?</p>

<p>Thanks</p>