The dream in which you are in the library, could indicate your deep desire for knowledge. You wish to get as much information as you can for the subjected you are interested very much. It could also represent the new idea that just popped into your head and you need to get to know more about it and how to make it real. If you bring the books to the library, you wish to give some valuable information to others.
Read more about dreaming of Library in other dream meanings interpretations.