I’m privileged to know Dan Brown (not to be confused with the infamous Dan Brown of Da Vinci Code fame), who now lives and serves in Istanbul, Turkey. This brilliant textbook on Islam from Wiley-Blackwell is now in its 3rd edition and it’s easy to see why. It is superbly informative on an incredibly diverse range of topics, from the historical background of Islam in the Byzantine and Sassanid Empires, to the origins of the prophet, the Qur’an, the tradition, Islamic law and of the empire/caliphate, and then right through every period of history to modern and postmodern interpretations of Islam. The approach is to integrate the rich Islamic tradition with the venerable tradition of Western critical scholarship, while also letting each one critique the other.
It’s written really well, too, which just makes it a delight to read. The annotated bibliographies at the end of each chapter demonstrate how incredibly well read Brown is. This should be your go-to introductory book on all things Islam. The only major thing missing from what I could see was any discussion of folk Islam, which is ubiquitous and I’d argue even more locally significant than Sufism.