"Islam" is an Arabic word that means peace and submission. The "peace" in Islam means to be at peace with oneself and your surroundings and "submission" means submission to the Will of God. A broader meaning of the word "Islam" is to achieve peace by submitting to the Will of God.
Islam is a unique religion with a name that signifies a moral attitude and a way of life. Judaism takes its name from the tribe of Judah, Christianity from Jesus Christ, Buddhism from Buddha, and Hinduism from the Indus River. However, Muslims derive their identity from the message of Islam, rather than the person of Muhammad (salla Allah 'alyhi wa sallam-peace and blessings be upon him). Therefore, Muslims should never be called "Mohammedans".
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2. Who is Allah?
Allah is the Arabic word for the "One God." Allah is not a deity specific to Muslims alone. He is God of all creations, because He is their Creator and Sustainer. An Arabic speaking person of any religion would only call God by His name in Arabic, which is Allah. After all Moses and Jesus did not speak English, and the English-language word "God" was not in their vocabulary!
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3. Who is a Muslim?
The word "Muslim" means the one who submits to the Will of God, declaring that "there is no one worthy of submission except the One God and Muhammad is the messenger of God." In a broader sense, anyone who willingly submits to the Will of God is a Muslim. Thus, all the prophets preceding Prophet Muhammad are considered Muslims. The Qur'an specifically mentions Abraham who lived long before Moses and Jesus that, "he was neither a Jew or a Christian but a Muslim," because, he had submitted to the Will of God. Thus, there are Muslims who are not submitting at all to the Will of God and there are Muslims who are doing their best to live an Islamic life.
One cannot judge Islam by looking at those individuals who have a Muslim name but in their actions, they are not living or behaving as Muslims. In fact, many Muslim Americans have not even adopted traditional Muslim names and there are good Muslims. The extent of being a Muslim can be according to the degree to which one submits to the Will of God in his beliefs and his actions.
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4. Who was Muhammad?
Muhammad was born in a noble tribe of Mecca in Arabia in the year 570 CE. His ancestry goes back to Prophet Ishmael, son of Prophet Abraham. His father died shortly before his birth and his mother died when he was six. He did not attend school and was thus unable to read and write.
In accordance to the prevalent custom, he was raised first by a nurse, and then by his grandfather and uncle. As a young man, he was known as a righteous person, a trait that earned him the title of Al-Amin-the trustworthy. He often used to retire to meditate in a cave near Mecca. At age 40, he was given the prophethood when the angel, Gabriel, appeared in the cave with God's Command. Subsequently, the revelations came over 23 years and were compiled in the form of a book called the Qur'an which Muslims consider as the final and the last word of God given to humankind. The Qur'an has been preserved in its original form and confirms the truth in the Torah, the Psalms, and the Gospel.
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5. Do Muslims worship Muhammad?
No. Muslims do not worship Muhammad or any other prophets. Muslims believe in all prophets including Adam, Noah, Abraham, David, Solomon, Moses, and Jesus. In fact, the belief is all prophets of God are an integral part of the faith. Muslims believe that Muhammad was the last of the prophets. They believe that God alone is to be worshiped, not any human being.