Understand your assignment. Ask your instructor if anything about your assignment is unclear to you before you begin. Ask specific questions. Mention what you are going to do with the information. Not all librarians are alike.
Different librarians have subject expertise in different academic fields.
If your librarian consults another librarian, it is done to provide you with the best possible answer. Don't worry if your topic is of a controversial or personal nature. Librarians have a professional responsibility to treat your request confidentially and respectfully. Ask as many questions as you need to. Librarians will be happy to work with you to help you get started on your research.