The author states, "'A=B' is about identities in general, and hypergeometric identities in particular, with emphasis on computer methods of discovery and proof. The book describes a number of algorithms for doing these tasks, and we intend to maintain the latest versions of the programs that carry out these algorithms on this page. So be sure to consult this page from time to time, and help yourself to the latest versions of the programs."
The entire book is available for purchase, but can also be downloaded for free at this site. This website also included some reviews of the book.