Welcome sis! God willing, you learn more about Islam on this forum!
I hope I can answer your question well (why Muslims believe differently than Christians) is because we, please do not take this offensively, do not believe it is possible for a man to be God. For us, it does just not make sense. However, Muslims believe that Jesus (peace be upon him) was born from one mother and that he preformed many miracles, they do not believe that he died on the cross and instead was replaced by someone else. (Also, Mary is very respected in Islam, as from the Quran it says: And @ when the angels said, "O Mary, indeed Allah has chosen you and purified you and chosen you above the women of the worlds (Chapter 3 Verse 42). [/FONT][/COLOR][/SIZE][FONT=Verdana] Jesus (Peace be Upon Him) is one of the 5 greatest Prophets in Islam as well as Muhammed (Peace be Upon Him), Moses (Peace be Upon Him), Adam (Peace be Upon Him), and Noah (Peace be Upon Him). Muslims also believe in the Bible and the Torah but believe they have been distorted overtime. [/FONT]
To us, God (or as we say "Allah" but it means the same thing) is one whole, nothing is better than him. "[FONT=Verdana]Allah is He besides Whom there is no god, the Everliving, the Self-subsisting by Whom all subsist; slumber does not overtake Him nor sleep; whatever is in the heavens and whatever is in the earth is His; who is he that can intercede with Him but by His permission? He knows what is before them and what is behind them, and they cannot comprehend anything out of His knowledge except what He pleases, His knowledge extends over the heavens and the earth, and the preservation of them both tires Him not, and He is the Most High, the Great." ~Quran (which we believe is the word of God) , Surah (Chapter) 2, Ayah (verse) 255.
Apart from that, you will find that many of the beliefs of Christians are similar to Islamic beliefs as well.
And please, do not listen to all that the media says about Islam. They are usually distorting facts and they never report the good things about it.
I also have a few questions for you.
Why is Jesus (Pbuh) praised more than Adam (Pbuh) when Adam did not have a mother or a father?
What about this verse in the bible (I understand this might not be the bible that you read, I am sorry if so)? [/FONT][FONT=Times New Roman][B]And in vain they worship Me [Matthew 15:9][/B][/FONT];