I've been busy most of my adult life with apologetics in support of our LDS position, and in particular, the Book of Mormon.
The Book of Mormon is key to the success of the Kingdom of God in the Latter-Days, which is why I always concentrate upon it.
My testimony is very simple:
1) There is a GOD.
2) The tomb is empty.
3) Joseph Smith did see GOD and his Son, Jesus Christ.
4) The Book of Mormon is the word of GOD to man for the Latter-Days.
"Outside of a Dog, a book is a man's best friend. Inside a Dog it's too dark to read." -Anonymous