There is no one Muslim culture. If you look at pictures of Indonesian Muslims, or those in Turkey, in Saudi Arabia and in Dubai, you will see that they all have different cultures and also different interpretations of the religion. There are also differences between Sunni and the Shiite Muslims, even those living in the same country and the same city.
Basically, Islam is a belief in one God, and the prophets (like Abraham) in the Bible. (They use the Koran.) Jesus is thought of as a Prophet. Muslims pray regularly during the day. Mecca is a Holy city to be visited at least once in a lifetime if possible.