The International federation of Library Associations and Institutions (IFLA) has recently published a background paper on E-lending.  The paper provides a succinct overview of the technical, legal and strategic issues related to the provision of eContent (eBooks specifically) to members of a library service. 

Public library staff responsible for collection development and the acquisition of e-Resources may also find the IFLA publication; Key Issues for e-Resource Collection Development: A guide for Libraries, to also be of benefit.