One thing you’ll learn if you pursue the Koran is that
most Muslims are adamantly against translating the Koran into other languages–the original Arabic is beautiful, and considered to be inerrantly “revealed,” on a level of comparison to the Incarnation of the Word Christians affirm in Jesus. So what you can (and should) read is a “translation,” which is less-beautiful because it never translates cleanly into English, and less authoritative.