This chapter introduces the readers and users to the goals of the digitally provided index of the compendium Structures of Epic Poetry and the methods used for it. It also expands on the broader applicability of digital methods in view of electronic publishing, and to the problems involved. The chapter focuses on two aspects of my work for the compendium, where digital tools played a central role: the creation of the index locorum and the development of a digital compendium to the printed volumes.