This book should be (and is in some Universities) mandatory for the study of the Middle East in general and Arab peoples specifically.
Written by Albert Hourani one of the great scholars of the Middle East it is both concise and comprehensive covering centuries of history while presenting the reader with enough detail that they do not feel that they are being cheated by the author skimming over the most important events in history.
The book begins with the beginnings of the Islamic faith and the Islamic empire covering this in rather short chapters before moving onto the Abbasids. While some may feel this is a slightly inappropriate place to start (others Hitti for example, begin with pre Islamic times) It seems Hourani has taken into account much of the Western view that the Middle East has been shaped by Islam and thus, his book should begin where it begins.
The book covers matters of the politics and structure of the various Islamic empires, the culture and arts of these empires, religious sects and revolts and life both in rural areas and in the built up cities. The impact of the west and the Ottoman empire are also given extensive coverage.
While there are several respected writers on Middle Eastern history I have always personally preferred Houranis books. I have found him honest and impartial when dealing with sensitive issues of history not least modern history