There is a new book on the block coming out in May:
Polymyalgia Rheumatica and Giant Cell Arteritis
Authors: Bhaskhar Dasgutpa and Christian Dejaco.
03 May 2016
Oxford Rheuumatology Library.
Polymyalgia Rheumatica and Giant Cell Arteritis: a survival guide by Dr Kate Gilbert PhD (ISBN: 9781500713409 availabe from Amazon and also direct from PMRGCAUK.
and a booklet called 'Living with PMR&GCA' written by Patients for Patients and available from PMR&GCAuk North East Support.