To find out the truth about Mormonism check out Sye Ten Bruggencate's website page on Mormonism here http://proofthatgodexists.org/other-worldviews2.php#mormonism.
If you aren't sure if God exists or not, then go through the proof that God exists on the same website
from the front page here http://www.proofthatgodexists.org/.
This website http://mmoutreachinc.com/mormons/mormon_index.html also has a lot of very good information about Mormonism.
If you are a Mormon I pray that you would come to know the truth that is found in the Bible alone.
God bless you.