The present communication analyzes the legal implications that from a point of view of the author right have the acts of information and works operation which they make the libraries in the course of its functions, as well as the exceptions that we needed to see reflected within the framework legal state to be able to continue carrying out them. All it to the light of the legal changes that the transposition of Directive 2001/29/CE to the harmonization of certain aspects of the rights of author and compatible rights to the rights of author in the society of the information it is going to suppose.