You guys have given some great sites - thanks!!
I think this one was mentioned before, but to offer it again - religioustolerance.org
This site is one of the better for explanations because they consult with religious teachers and leaders of each religion to have them explain their belief system and dogma. As most systems, as they organize, create sects of disagreement, this helps avoid any one person claiming to know the totality of a religion.
BTW is anyone on here well versed in the Baghavad-Gita?? Can anyone give me the passage delineating Arjun's birth?? I think I am missing some piece of my understanding of the details. (I am weakest on my reading of the BG and the book of mormon. The BG is a hard slog to read through and the mormon book makes me laugh too much!