Dáithì Ó Hógáin: Celtic Warriors 1999 ISBN 0-312-20509-0 is a book I highly recommend, especially for those who are just starting to read about Celtic warriors. This is a beautifully illustrated volume and gives hefty portions of historical information without being dry, dull or overloaded with footnotes. My copy is already well-used, both for research and for pleasure. Its a book that anyone, from novice to scholar, should enjoy.