Trying to get a little clarity into the bewildering belief systems of Ancient Egypt is not an easy task but Geraldine Pinch definitely nails it. With its multiplicity of deities whose attributes sometimes changed over the millenia, Egyptian mythology allows a variety of interpretations and too many books on the subject leave the reader more confused than enlightened. She is not dogmatic in her approach and offers various interpretations but doesn't beat you to death with her encyclopedic knowledge of the subject. I thought she hit the right balance and on occasions had some profound insights to offer.
Its probably not the book to get if you know nothing of the subject, nor if you've already graduated to reading Hornung or Assman. As the title implies, it is a guide to Gods and Goddesses and the traditions from which they arose. It is not a collection of stories like the Greek myths. There are stories and anecdotes but they are not a major feature of the book.
A good all round reference work that you'll keep going back to.