I highly recommend you to read this article as a basic understanding on Islam and Prophet Muhammad. I have decided to use an article written by a Non- Muslim as it would be more impartial.
Happy reading! Peace, anas
Mohammed The Prophet By Prof. K. S. Ramakrishna Rao, Head of the Department of Philosophy, Government College for Women University of Mysore, Mandya-571401 (Karnatika). Re-printed from "Islam and Modern age", Hydrabad, March 1978.