informational interview is were you get information like for example how people on talk shows interview people.... a job interview is to not get information but its to get a job... one way its benefitial is that one you get information and two it helps you to understand things from their point to view... two questions i would ask in an informational interview would be ''whats your point of view'' and ''whats something you would want people to know about this that they don't already know... hope this helps!!! :)
