This site provides an entire reference guide for the book. Each chapter is outlined in extensive detail covereing the number of pages for each chapter, a synopsis, all of the new characters introduced, ones returning, and ones just mentioned, setting and locations of the chapter and ones mentioned, spells, memorable lines and moments, britishisms and timelines.

http://www.hp-lexicon.org/about/books/hbp/rg-hbp.html