This chapter aims to survey and assess the studies on what might be called literary or reading networks. It focuses on a highly literate group of book owners and writers connected with the household of Sir John Fastolf at Caister Castle, Norfolk. The richness of the information on the Fastolf household and East Anglian culture is well known and may lead to doubts that such an approach to literary and regional networks can be adopted for other lesser known groups and areas. When Raymond Williams stated that 'culture is one of the two or three most complicated words in the English language', he probably did not have 'gentry' and 'networks' in his mind as the other two. The chapter highlights the problematic nature of those three words, separately and in combination.