Islam is..

“Islam is not a new religion, but a final restatement of the original revelation that has been conveyed to humanity by messengers and prophets sent by God. The original unchanged revelations given to Abraham and other prophets (like Moses, Jesus etc) reaching back to Adam(peace be upon all of them) all came from One true God (The Creator). This common origin explains their similarities in many beliefs and values However over time the teachings of the various religions, due to a variety of reasons, have become distorted and mixed with man-made ideas…
The Last Prophet and Messenger of God, Muhammad(peace be upon him) who is a direct descendent of Abraham through his first born son, Ishmael, was sent with the last Guidance, Revelation, Testament, The Holy Quran to amend and correct the changes and corruption made in “Torah” which was sent to Moses and the true “Gospel” which was sent to Jesus. To say the truth, God preserved all other Holy Books plainly by preserving His last Book the Holy Quran, which contains the right and the truth of all that was changed in those other Books.

Islam teaches us that we must pray to one God without any intermediary and no soul can bear the burden of another, and that the nature of humanity is Good., and we did not inherit sin from Adam. Each soul comes into being free of sin. Some religions say that human beings due to their sinfulness, cannot approach God without an intermediary–which mistakenly implies that God is unable or unwilling to forgive human beings directly. False religions seek to get people to despair of the Mercy of God. Once they are convinced that they cannot approach God directly people can be mislead into turning to false gods for help. These “false gods” can take various forms, such as, saints, angels or someone who is believed to be “son of God” or “God incarnate”.

The oneness and universality of God’s message requires that people accept all the messengers of God. Rejecting one of them amounts to rejecting them all. Jews reject Jesus’s mission and Muhammad’s mission; Christians reject Muhammad’s mission; whereas the Muslims accept them all but reject incorrect historical interpretation and human elements in these missions. You can do that now as you are reading these lines is to pronounce the two confirmations and attestation of faith, here it is 
“I BEAR WITNESS THAT THERE IS NO GOD WORTHY OF WORSHIP EXCEPT ALLAH( Arabic word means one God- The Creator). AND I BEAR WITNESS THAT MUHAMMAD IS HIS SERVANT AND MESSENGER. 
I BEAR WITNESS THAT JESUS IS HIS SERVANT AND MESSENGER.” 
For more info 
http://www.islamdoor.com/
http://www.islamtomorrow.com/

I encourage non-muslims to learn about Islam from Muslim sources and the basis of the Muslim Belief and not rely on second hand information which in many cases is distorted or contains a deap seated anti-Muslim agenda. This is indeed a more scholarly approach. There are good and bad followers in every religion. The correct thing to do is Judge a religion by its documented revelation from God and the Prophet who brought that revelation..