Stage Manager Handbook
This handbook describes the duties of the Stage Manager. While generally for the SM's use, feel free to read this so you get a better sense of what your SM's job is.
RLHS Theatre Handbook
Everyone should download this so they have their own copy either on a devise or, if you're feeling fancy, on paper. It is important that everyone read through this in order to understand your role as well as the roles of others in the cast/crew.