Islam is a monotheistic and Abrahamic religion articulated by the Quran, the verbatim word of God, and by the teachings and normative example (called the Sunnah and composed of Hadith) of Prophet Hazrat Muhammad (saw) , the last prophet of God.
God is one and incomparable and the purpose of existence is to love and serve God.
The five pillars of Islam.
Islamic law: Sharia.
Branches: Sunni, Shia, etc.
Holy places: Makka, Madina, Jerusalem, Karbala , Najaf, etc.
Books: Quran , Sunnah.
World Population: 1.62 billion , 2nd largest.
Major presence: Indonesia, Pakistan, India ,Bangladesh, Egypt, Nigeria, Iran, Turkey, Algeria, Morocco.