Here is a succinct video introduction to the Book of Mormon, the book of scripture Mormons get their nickname from.
I have read the Book of Mormon many times. I suppose it’s strange to think of a “new” book of scripture comparable to the Bible (because that’s what the Book of Mormon is). However, to me the Book of Mormon is so familiar, it’s a part of me. I have been helped and comforted through it’s pages so many times that I cannot doubt it’s truthfulness. I feel that in the inherent goodness and beauty of it’s passages. Words like these:
“And if men come unto me I will show unto them their weakness. I give unto men weakness that they may be humble; and my grace is sufficient for all men that humble themselves before me; for if they humble themselves before me, and have faith in me, then will I make weak things become strong unto them.” ETHER 12:27
That is true. I know it in my heart. It gives me courage to face my challenges and perspective about why I have them. There are literally thousands of passages like this in the Book of Mormon. Passages that I love for their undiluted truth. I guess that’s the best description I can come up with for the strength of the Book of Mormon. It is pure, undiluted truth about God, Jesus Christ, and life in general.