Read the 1830 version or youll miss out on the authors original interpretation of God (which was something similar to the Trinity). This is the book that over 10 million people (including myself) at one time or another in their lives believe(d) to be scripture. Included are many myths, a look at how some of the American Indians were freemasons a thousand years before masonry was invented, revamped bible stories, sayings borrowed from the Bible, and a very incorrect "history" of the American Indians. Here is a searchable current version you can compare to the 1830 version.
For a free copy to examine yourself, (complete with missionaries unless you specify otherwise) call 1-888-537-7111. (They are giving out free King James Versions of the Bible through the number now too.)
Although I disagree with much of what Alexander Campbell says, you may find his review (which was done soon after the book was published over 160 years ago) to be interesting and insightful.
"The Book Of Mormon seems to be merely a prosy detail of imaginary history, with the Old Testament for a model; followed by a tedious plagiarism of the New Testament. The author labored to give his words and phrases to the quaint, old-fashioned sound and structure of our King James's translation of the Scriptures; and the result is a mongrel -- half modern glibness and half ancient simplicity and gravity." -- Mark Twain in Roughing It