You have to dismantle what you have read about the Quran, study the subject and then make a decision about what it is about. Unfortunately, just going to answeringislam and sam shamoun will not do this.
2:62 (That was a glimpse of the past.) Those who believe (in the Qur’an), and those who are Jews, and the Christians and the Sabians; whoever believes in God and the Last Day and does beneficial works, their reward is with their Lord. On them shall be no fear, nor shall they suffer from depression. [Sabians = Nature worshipers. Note: The author of this rendition is not aware of any instance in the Qur’an where the use of Tasreef, that is, looking at the related verses, is more crucial than in the understanding of this verse. Some great commentators have misunderstood this verse for missing related verses such as these: Those who believe (in the Qur’an) and those who are Jews, and the Sabians, and the Christians; whoever believes in God and the Last Day, and does works that benefit humanity, on them shall be no fear, nor shall they grieve (5:69). It is inconceivable that the opponents of the truth, whether they are the People of the Book, or the idolaters, could get out of error until the clear proof, Al-Qur’an, comes to them (98:1-3). The non-Israelite Prophet liberates the People of the Book from the shackles of their manmade dogmas and brings them from darkness to light (7:157). They say, “Be Jews or Christians, then you will be rightly guided.” Say, “Nay, we follow the Creed of Abraham the upright. He associated none with God” (2:135). Say, “We believe in God and what was sent down to us, and in what was sent down to Abraham, Ishmael, Isaac, Jacob, and the Tribes, and in what was given to Moses and Jesus and to other Prophets from their Lord. We make no distinction among them. And for Him, we are Muslims” (2:136). Thus, if they come to believe as you believe, then they are rightly guided. But if they turn away, they will be falling into opposition and God will be Sufficient for you against them. He is the Hearer, the Knower (2:137). O You who have chosen to be graced with belief = O You who acknowledge the Qur’an. Reflecting on the above verses makes it clear that the belief in God and the Last Day must be in accordance with the Qur’an. Verses 2:62 and 5:69 emphasize that mere giving of a name to one’s religion or creed carries no importance]
Please listen to the whole lecture from a Rabbi and you may reach an educated decision about what the Quran says: