Guide to Muslims shows that Muslims today are largely not attached to the Koran but a religion based on oral traditions and fabrications of opportunists who were interested in personal gain. Today, the pollution of the original religion is so serious that friend and foe can no longer make a distinction between fact and fiction. This book aims at a reformation to the origin and modernity so that the supporters will fit better into world society.The power of the author is his great logical thinking ability and knowledge of general sciences which is expressed in his book. In addition to refuting all kinds of dogmas in Islam such as headscarf, sacrifice and jihad, his combining knowledge in the chapter evolution - properties of the first life and the emergence of the first human - even shows alternative insights that can compete with great theories.